Notice of Expiration of Patents
                     Due to Failure to Pay Maintenance Fee

   35 U.S.C. 41 and 37 CFR 1.362(g) provide that if the required
maintenance fee and any applicable surcharge are not paid in a patent
requiring such payment, the patent will expire at the end of the 4th, 8th
or 12th anniversary of the grant of the patent depending on the first
maintenance fee which was not paid.
   According to the records of the Office, the patents listed below have
expired due to failure to pay the required maintenance fee and any
applicable surcharge.

                    PATENTS WHICH EXPIRED ON March 14, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

4,811,433                       06/940,391                       03/14/89
4,811,443                       07/121,607                       03/14/89
4,811,445                       07/147,370                       03/14/89
4,811,447                       06/890,241                       03/14/89
4,811,448                       07/106,579                       03/14/89
4,811,451                       07/105,286                       03/14/89
4,811,452                       07/147,426                       03/14/89
4,811,453                       07/209,566                       03/14/89
4,811,457                       07/151,812                       03/14/89
4,811,460                       07/134,226                       03/14/89
4,811,487                       06/681,051                       03/14/89
4,811,500                       07/011,621                       03/14/89
4,811,504                       07/149,682                       03/14/89
4,811,509                       07/116,654                       03/14/89
4,811,513                       07/076,745                       03/14/89
4,811,519                       07/215,270                       03/14/89
4,811,533                       07/098,284                       03/14/89
4,811,534                       07/081,804                       03/14/89
4,811,547                       07/152,021                       03/14/89
4,811,551                       07/205,503                       03/14/89
4,811,563                       07/177,396                       03/14/89
4,811,566                       07/087,940                       03/14/89
4,811,572                       06/810,361                       03/14/89
4,811,575                       07/107,608                       03/14/89
4,811,582                       07/136,743                       03/14/89
4,811,583                       07/106,367                       03/14/89
4,811,591                       07/101,293                       03/14/89
4,811,595                       07/035,003                       03/14/89
4,811,610                       07/186,014                       03/14/89
4,811,612                       07/121,144                       03/14/89
4,811,615                       07/132,504                       03/14/89
4,811,617                       07/151,212                       03/14/89
4,811,622                       06/831,438                       03/14/89
4,811,626                       07/111,934                       03/14/89
4,811,638                       07/185,887                       03/14/89
4,811,667                       07/046,318                       03/14/89
4,811,671                       06/939,777                       03/14/89
4,811,677                       07/004,636                       03/14/89
4,811,706                       07/158,433                       03/14/89
4,811,707                       06/895,468                       03/14/89
4,811,721                       07/065,278                       03/14/89
4,811,726                       07/199,059                       03/14/89
4,811,741                       06/899,161                       03/14/89
4,811,752                       07/121,452                       03/14/89
4,811,755                       07/131,578                       03/14/89
4,811,758                       07/206,609                       03/14/89
4,811,759                       07/104,021                       03/14/89
4,811,764                       07/109,591                       03/14/89
4,811,780                       07/171,470                       03/14/89
4,811,792                       07/164,867                       03/14/89
4,811,794                       06/934,152                       03/14/89
4,811,799                       07/019,585                       03/14/89
4,811,800                       07/111,222                       03/14/89
4,811,819                       07/162,174                       03/14/89
4,811,830                       06/489,013                       03/14/89
4,811,832                       06/776,995                       03/14/89
4,811,833                       07/060,853                       03/14/89
4,811,848                       07/057,163                       03/14/89
4,811,852                       07/161,483                       03/14/89
4,811,858                       07/149,401                       03/14/89
4,811,860                       07/217,937                       03/14/89
4,811,863                       07/137,313                       03/14/89
4,811,865                       07/100,546                       03/14/89
4,811,868                       07/090,065                       03/14/89
4,811,875                       07/172,488                       03/14/89
4,811,880                       07/121,810                       03/14/89
4,811,884                       07/099,939                       03/14/89
4,811,891                       07/181,947                       03/14/89
4,811,897                       07/016,823                       03/14/89
4,811,906                       06/881,923                       03/14/89
4,811,909                       07/025,898                       03/14/89
4,811,937                       07/071,708                       03/14/89
4,811,938                       07/153,584                       03/14/89
4,811,949                       07/099,461                       03/14/89
4,811,950                       07/077,929                       03/14/89
4,811,954                       07/142,808                       03/14/89
4,811,958                       07/207,907                       03/14/89
4,811,961                       07/179,080                       03/14/89
4,811,974                       07/105,521                       03/14/89
4,811,976                       07/065,551                       03/14/89
4,811,996                       07/195,432                       03/14/89
4,812,003                       07/119,012                       03/14/89
4,812,006                       06/554,858                       03/14/89
4,812,011                       07/028,008                       03/14/89
4,812,014                       07/047,357                       03/14/89
4,812,033                       07/033,207                       03/14/89
4,812,055                       07/139,215                       03/14/89
4,812,066                       07/220,942                       03/14/89
4,812,067                       07/120,345                       03/14/89
4,812,073                       07/127,507                       03/14/89
4,812,090                       07/007,197                       03/14/89
4,812,092                       07/168,900                       03/14/89
4,812,095                       07/169,658                       03/14/89
4,812,100                       07/168,901                       03/14/89
4,812,105                       07/157,553                       03/14/89
4,812,108                       07/099,882                       03/14/89
4,812,110                       07/079,397                       03/14/89
4,812,111                       07/198,701                       03/14/89
4,812,112                       07/119,197                       03/14/89
4,812,115                       07/105,108                       03/14/89
4,812,137                       07/125,273                       03/14/89
4,812,143                       07/129,248                       03/14/89
4,812,147                       06/796,240                       03/14/89
4,812,152                       07/100,177                       03/14/89
4,812,159                       07/025,586                       03/14/89
4,812,166                       07/166,942                       03/14/89
4,812,167                       07/182,954                       03/14/89
4,812,169                       07/060,939                       03/14/89
4,812,172                       07/117,339                       03/14/89
4,812,174                       07/091,241                       03/14/89
4,812,187                       07/107,705                       03/14/89
4,812,210                       07/109,008                       03/14/89
4,812,211                       07/164,417                       03/14/89
4,812,213                       07/190,890                       03/14/89
4,812,215                       07/231,335                       03/14/89
4,812,220                       07/084,570                       03/14/89
4,812,222                       07/218,436                       03/14/89
4,812,225                       07/012,859                       03/14/89
4,812,229                       07/022,264                       03/14/89
4,812,232                       07/020,570                       03/14/89
4,812,252                       07/189,577                       03/14/89
4,812,261                       07/084,355                       03/14/89
4,812,278                       07/019,135                       03/14/89
4,812,281                       07/132,038                       03/14/89
4,812,287                       07/157,265                       03/14/89
4,812,293                       07/159,485                       03/14/89
4,812,306                       07/139,064                       03/14/89
4,812,310                       07/088,450                       03/14/89
4,812,329                       07/072,834                       03/14/89
4,812,332                       07/064,022                       03/14/89
4,812,335                       07/111,808                       03/14/89
4,812,340                       07/142,423                       03/14/89
4,812,341                       07/145,461                       03/14/89
4,812,349                       07/056,844                       03/14/89
4,812,363                       07/113,825                       03/14/89
4,812,364                       07/130,055                       03/14/89
4,812,371                       07/081,664                       03/14/89
4,812,374                       06/479,509                       03/14/89
4,812,392                       06/814,246                       03/14/89
4,812,398                       06/861,306                       03/14/89
4,812,404                       06/878,256                       03/14/89
4,812,406                       06/775,090                       03/14/89
4,812,424                       07/127,808                       03/14/89
4,812,426                       07/012,103                       03/14/89
4,812,444                       06/942,421                       03/14/89
4,812,458                       07/092,034                       03/14/89
4,812,461                       07/100,824                       03/14/89
4,812,464                       07/129,199                       03/14/89
4,812,466                       07/115,633                       03/14/89
4,812,472                       07/120,264                       03/14/89
4,812,476                       06/906,736                       03/14/89
4,812,479                       06/901,402                       03/14/89
4,812,481                       07/038,566                       03/14/89
4,812,489                       07/149,303                       03/14/89
4,812,499                       06/841,591                       03/14/89
4,812,502                       07/070,355                       03/14/89
4,812,503                       07/131,657                       03/14/89
4,812,510                       06/853,054                       03/14/89
4,812,521                       07/099,253                       03/14/89
4,812,526                       07/059,053                       03/14/89
4,812,527                       07/112,989                       03/14/89
4,812,530                       07/138,265                       03/14/89
4,812,537                       07/051,694                       03/14/89
4,812,544                       06/774,269                       03/14/89
4,812,545                       06/863,526                       03/14/89
4,812,549                       07/001,010                       03/14/89
4,812,553                       07/109,125                       03/14/89
4,812,558                       07/119,333                       03/14/89
4,812,564                       07/048,439                       03/14/89
4,812,567                       06/942,897                       03/14/89
4,812,568                       07/012,921                       03/14/89
4,812,574                       07/133,823                       03/14/89
4,812,576                       07/026,160                       03/14/89
4,812,578                       07/187,547                       03/14/89
4,812,583                       07/095,800                       03/14/89
4,812,592                       07/001,379                       03/14/89
4,812,602                       07/181,378                       03/14/89
4,812,608                       07/171,809                       03/14/89
4,812,611                       06/811,625                       03/14/89
4,812,612                       07/142,583                       03/14/89
4,812,613                       07/143,965                       03/14/89
4,812,617                       06/451,254                       03/14/89
4,812,620                       06/860,789                       03/14/89
4,812,622                       07/013,421                       03/14/89
4,812,623                       07/076,332                       03/14/89
4,812,631                       07/056,999                       03/14/89
4,812,633                       07/179,318                       03/14/89
4,812,634                       07/218,082                       03/14/89
4,812,637                       07/066,015                       03/14/89
4,812,645                       07/032,042                       03/14/89
4,812,663                       06/890,312                       03/14/89
4,812,678                       07/029,096                       03/14/89
4,812,685                       07/154,340                       03/14/89
4,812,688                       07/139,551                       03/14/89
4,812,690                       07/011,499                       03/14/89
4,812,695                       06/897,132                       03/14/89
4,812,698                       07/102,397                       03/14/89
4,812,705                       07/134,484                       03/14/89
4,812,707                       07/114,466                       03/14/89
4,812,710                       07/024,708                       03/14/89
4,812,714                       07/111,396                       03/14/89
4,812,717                       07/043,751                       03/14/89
4,812,719                       07/183,950                       03/14/89
4,812,728                       07/133,740                       03/14/89
4,812,730                       07/035,035                       03/14/89
4,812,742                       07/127,972                       03/14/89
4,812,745                       07/056,102                       03/14/89
4,812,754                       07/001,162                       03/14/89
4,812,756                       07/089,648                       03/14/89
4,812,761                       07/100,583                       03/14/89
4,812,774                       07/130,234                       03/14/89
4,812,784                       07/123,024                       03/14/89
4,812,786                       07/100,991                       03/14/89
4,812,802                       07/118,391                       03/14/89
4,812,815                       06/923,163                       03/14/89
4,812,826                       07/031,236                       03/14/89
4,812,833                       07/055,547                       03/14/89
4,812,834                       06/761,753                       03/14/89
4,812,836                       07/002,399                       03/14/89
4,812,838                       07/115,610                       03/14/89
4,812,843                       07/084,439                       03/14/89
4,812,845                       07/011,366                       03/14/89
4,812,846                       07/220,419                       03/14/89
4,812,849                       07/104,061                       03/14/89
4,812,852                       07/016,788                       03/14/89
4,812,858                       07/134,011                       03/14/89
4,812,875                       07/058,357                       03/14/89
4,812,883                       07/131,377                       03/14/89
4,812,896                       06/930,162                       03/14/89
4,812,903                       07/085,942                       03/14/89
4,812,914                       07/212,224                       03/14/89
4,812,916                       07/030,997                       03/14/89
4,812,926                       07/053,118                       03/14/89
4,812,927                       07/117,632                       03/14/89
4,812,932                       07/070,935                       03/14/89
4,812,934                       07/063,510                       03/14/89
4,812,940                       07/062,868                       03/14/89
4,812,942                       07/043,401                       03/14/89
4,812,947                       07/134,482                       03/14/89
4,812,948                       07/168,375                       03/14/89
4,812,950                       07/050,058                       03/14/89
4,812,959                       07/052,673                       03/14/89
4,812,964                       07/140,260                       03/14/89
4,812,967                       06/837,345                       03/14/89
4,812,974                       06/823,531                       03/14/89
4,812,976                       07/004,186                       03/14/89
4,812,978                       06/874,634                       03/14/89
4,812,981                       06/790,839                       03/14/89
4,812,985                       06/907,394                       03/14/89
4,812,988                       06/902,372                       03/14/89
4,812,997                       07/036,428                       03/14/89
4,813,005                       07/065,971                       03/14/89
4,813,009                       06/667,687                       03/14/89
4,813,012                       07/080,411                       03/14/89
4,813,020                       07/170,623                       03/14/89
4,813,045                       06/889,993                       03/14/89
4,813,051                       07/005,056                       03/14/89
4,813,058                       07/084,900                       03/14/89
4,813,064                       07/012,178                       03/14/89
4,813,069                       06/929,787                       03/14/89
4,813,074                       06/930,835                       03/14/89
4,813,075                       07/125,101                       03/14/89

                    PATENTS WHICH EXPIRED ON March 9, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

5,191,658                       07/832,326                       03/09/93
5,191,660                       07/789,877                       03/09/93
5,191,662                       07/918,595                       03/09/93
5,191,665                       07/682,312                       03/09/93
5,191,675                       07/750,688                       03/09/93
5,191,679                       07/689,768                       03/09/93
5,191,680                       07/748,806                       03/09/93
5,191,695                       07/781,693                       03/09/93
5,191,702                       07/646,147                       03/09/93
5,191,719                       07/780,154                       03/09/93
5,191,723                       07/639,195                       03/09/93
5,191,726                       07/876,860                       03/09/93
5,191,730                       07/591,949                       03/09/93
5,191,736                       07/729,874                       03/09/93
5,191,740                       07/840,286                       03/09/93
5,191,746                       07/771,111                       03/09/93
5,191,748                       07/806,864                       03/09/93
5,191,758                       07/757,695                       03/09/93
5,191,764                       07/896,039                       03/09/93
5,191,770                       07/808,608                       03/09/93
5,191,774                       07/765,686                       03/09/93
5,191,776                       07/787,233                       03/09/93
5,191,785                       07/685,653                       03/09/93
5,191,788                       07/799,278                       03/09/93
5,191,796                       07/744,096                       03/09/93
5,191,809                       07/760,700                       03/09/93
5,191,813                       07/734,220                       03/09/93
5,191,822                       07/792,711                       03/09/93
5,191,827                       07/837,576                       03/09/93
5,191,830                       07/908,482                       03/09/93
5,191,831                       07/753,963                       03/09/93
5,191,845                       07/743,325                       03/09/93
5,191,847                       07/844,095                       03/09/93
5,191,862                       07/887,811                       03/09/93
5,191,869                       07/853,660                       03/09/93
5,191,874                       07/714,448                       03/09/93
5,191,876                       07/845,620                       03/09/93
5,191,889                       07/680,563                       03/09/93
5,191,892                       07/757,269                       03/09/93
5,191,896                       07/722,666                       03/09/93
5,191,899                       07/806,583                       03/09/93
5,191,905                       07/667,950                       03/09/93
5,191,919                       07/779,217                       03/09/93
5,191,923                       07/664,594                       03/09/93
5,191,926                       07/659,334                       03/09/93
5,191,928                       07/798,506                       03/09/93
5,191,930                       07/702,966                       03/09/93
5,191,934                       07/889,483                       03/09/93
5,191,935                       07/851,474                       03/09/93
5,191,937                       07/659,781                       03/09/93
5,191,940                       07/748,586                       03/09/93
5,191,944                       07/748,185                       03/09/93
5,191,950                       07/697,774                       03/09/93
5,191,954                       07/909,326                       03/09/93
5,191,956                       07/638,622                       03/09/93
5,191,962                       07/710,698                       03/09/93
5,191,965                       07/787,391                       03/09/93
5,191,966                       07/750,971                       03/09/93
5,191,969                       07/301,540                       03/09/93
5,191,980                       07/855,507                       03/09/93
5,191,981                       07/801,411                       03/09/93
5,191,984                       07/867,886                       03/09/93
5,191,985                       06/816,281                       03/09/93
5,191,988                       07/621,616                       03/09/93
5,191,989                       07/839,304                       03/09/93
5,191,990                       07/965,531                       03/09/93
5,191,992                       07/884,019                       03/09/93
5,191,994                       07/896,228                       03/09/93
5,191,996                       07/809,168                       03/09/93
5,192,003                       07/820,197                       03/09/93
5,192,019                       07/900,353                       03/09/93
5,192,029                       07/473,901                       03/09/93
5,192,031                       07/726,234                       03/09/93
5,192,034                       07/680,316                       03/09/93
5,192,041                       07/716,562                       03/09/93
5,192,042                       07/429,969                       03/09/93
5,192,044                       07/808,166                       03/09/93
5,192,053                       07/681,539                       03/09/93
5,192,055                       07/862,431                       03/09/93
5,192,056                       07/782,826                       03/09/93
5,192,064                       07/808,362                       03/09/93
5,192,078                       07/659,503                       03/09/93
5,192,081                       07/462,455                       03/09/93
5,192,088                       07/844,726                       03/09/93
5,192,093                       07/872,680                       03/09/93
5,192,097                       07/855,865                       03/09/93
5,192,101                       07/776,667                       03/09/93
5,192,104                       07/890,074                       03/09/93
5,192,105                       07/826,852                       03/09/93
5,192,106                       07/858,426                       03/09/93
5,192,111                       07/845,380                       03/09/93
5,192,112                       07/817,504                       03/09/93
5,192,113                       07/573,468                       03/09/93
5,192,123                       07/610,381                       03/09/93
5,192,129                       07/756,076                       03/09/93
5,192,130                       07/664,787                       03/09/93
5,192,131                       07/910,582                       03/09/93
5,192,140                       07/617,366                       03/09/93
5,192,142                       07/589,319                       03/09/93
5,192,144                       07/710,106                       03/09/93
5,192,150                       07/757,223                       03/09/93
5,192,162                       07/790,649                       03/09/93
5,192,163                       07/890,718                       03/09/93
5,192,165                       07/864,358                       03/09/93
5,192,167                       07/776,641                       03/09/93
5,192,169                       07/790,626                       03/09/93
5,192,170                       07/761,681                       03/09/93
5,192,181                       07/753,573                       03/09/93
5,192,183                       07/751,425                       03/09/93
5,192,187                       07/780,636                       03/09/93
5,192,190                       07/884,268                       03/09/93
5,192,203                       07/741,503                       03/09/93
5,192,209                       07/756,521                       03/09/93
5,192,222                       07/766,434                       03/09/93
5,192,223                       07/605,952                       03/09/93
5,192,229                       07/891,278                       03/09/93
5,192,234                       07/873,226                       03/09/93
5,192,250                       07/848,044                       03/09/93
5,192,256                       07/876,116                       03/09/93
5,192,258                       07/603,651                       03/09/93
5,192,264                       07/592,553                       03/09/93
5,192,267                       07/678,169                       03/09/93
5,192,271                       07/797,319                       03/09/93
5,192,276                       07/627,769                       03/09/93
5,192,277                       07/810,430                       03/09/93
5,192,289                       07/814,328                       03/09/93
5,192,293                       07/909,579                       03/09/93
5,192,302                       07/783,645                       03/09/93
5,192,304                       07/716,137                       03/09/93
5,192,311                       07/566,257                       03/09/93
5,192,315                       07/856,465                       03/09/93
5,192,325                       07/903,327                       03/09/93
5,192,332                       07/771,478                       03/09/93
5,192,339                       07/845,828                       03/09/93
5,192,340                       07/839,965                       03/09/93
5,192,342                       07/868,650                       03/09/93
5,192,343                       07/786,762                       03/09/93
5,192,344                       07/757,661                       03/09/93
5,192,345                       07/730,917                       03/09/93
5,192,347                       07/804,596                       03/09/93
5,192,355                       07/007,115                       03/09/93
5,192,357                       07/216,831                       03/09/93
5,192,362                       07/735,752                       03/09/93
5,192,363                       07/753,401                       03/09/93
5,192,364                       07/720,727                       03/09/93
5,192,368                       07/830,905                       03/09/93
5,192,377                       07/689,413                       03/09/93
5,192,380                       07/622,568                       03/09/93
5,192,382                       07/536,544                       03/09/93
5,192,385                       07/922,346                       03/09/93
5,192,388                       07/686,417                       03/09/93
5,192,390                       07/771,883                       03/09/93
5,192,392                       07/662,063                       03/09/93
5,192,393                       07/524,980                       03/09/93
5,192,403                       07/701,278                       03/09/93
5,192,404                       07/762,076                       03/09/93
5,192,406                       07/638,934                       03/09/93
5,192,407                       07/472,315                       03/09/93
5,192,410                       07/771,211                       03/09/93
5,192,413                       07/082,332                       03/09/93
5,192,416                       07/682,907                       03/09/93
5,192,419                       07/765,425                       03/09/93
5,192,430                       07/716,302                       03/09/93
5,192,448                       07/843,655                       03/09/93
5,192,449                       07/870,058                       03/09/93
5,192,450                       07/901,627                       03/09/93
5,192,455                       07/749,892                       03/09/93
5,192,458                       07/596,395                       03/09/93
5,192,459                       07/338,569                       03/09/93
5,192,460                       07/388,731                       03/09/93
5,192,464                       07/872,416                       03/09/93
5,192,466                       07/775,299                       03/09/93
5,192,474                       07/883,833                       03/09/93
5,192,475                       07/851,593                       03/09/93
5,192,484                       07/749,493                       03/09/93
5,192,485                       07/738,231                       03/09/93
5,192,487                       07/829,236                       03/09/93
5,192,489                       07/462,415                       03/09/93
5,192,491                       07/850,865                       03/09/93
5,192,498                       07/775,680                       03/09/93
5,192,506                       07/655,541                       03/09/93
5,192,510                       07/648,005                       03/09/93
5,192,521                       07/794,274                       03/09/93
5,192,522                       07/798,382                       03/09/93
5,192,523                       07/707,319                       03/09/93
5,192,524                       07/514,589                       03/09/93
5,192,525                       07/722,322                       03/09/93
5,192,529                       07/892,294                       03/09/93
5,192,533                       07/858,374                       03/09/93
5,192,536                       07/794,680                       03/09/93
5,192,540                       07/311,873                       03/09/93
5,192,541                       07/753,270                       03/09/93
5,192,576                       07/775,219                       03/09/93
5,192,577                       07/763,411                       03/09/93
5,192,579                       07/751,091                       03/09/93
5,192,581                       07/822,383                       03/09/93
5,192,585                       07/590,503                       03/09/93
5,192,587                       07/749,141                       03/09/93
5,192,590                       07/452,170                       03/09/93
5,192,602                       07/699,657                       03/09/93
5,192,613                       07/620,251                       03/09/93
5,192,616                       07/775,684                       03/09/93
5,192,621                       07/865,427                       03/09/93
5,192,652                       07/723,677                       03/09/93
5,192,664                       07/603,745                       03/09/93
5,192,666                       07/465,660                       03/09/93
5,192,667                       07/394,400                       03/09/93
5,192,669                       07/744,612                       03/09/93
5,192,677                       07/713,602                       03/09/93
5,192,691                       07/845,867                       03/09/93
5,192,698                       07/853,150                       03/09/93
5,192,700                       07/828,374                       03/09/93
5,192,711                       07/822,662                       03/09/93
5,192,727                       07/747,050                       03/09/93
5,192,728                       07/418,377                       03/09/93
5,192,733                       07/802,190                       03/09/93
5,192,746                       07/550,330                       03/09/93
5,192,750                       07/826,763                       03/09/93
5,192,764                       07/707,536                       03/09/93
5,192,766                       07/751,871                       03/09/93
5,192,771                       07/561,038                       03/09/93
5,192,772                       07/747,454                       03/09/93
5,192,778                       07/677,030                       03/09/93
5,192,779                       07/751,120                       03/09/93
5,192,797                       07/714,182                       03/09/93
5,192,799                       07/895,417                       03/09/93
5,192,803                       07/719,870                       03/09/93
5,192,806                       07/684,740                       03/09/93
5,192,809                       07/860,638                       03/09/93
5,192,814                       07/875,764                       03/09/93
5,192,817                       07/775,973                       03/09/93
5,192,827                       07/810,608                       03/09/93
5,192,830                       07/931,469                       03/09/93
5,192,831                       07/647,885                       03/09/93
5,192,832                       07/576,335                       03/09/93
5,192,837                       07/532,595                       03/09/93
5,192,841                       07/788,700                       03/09/93
5,192,842                       07/701,065                       03/09/93
5,192,843                       07/669,649                       03/09/93
5,192,845                       07/721,425                       03/09/93
5,192,852                       07/791,728                       03/09/93
5,192,854                       07/829,561                       03/09/93
5,192,860                       07/758,694                       03/09/93
5,192,861                       07/675,652                       03/09/93
5,192,863                       07/644,571                       03/09/93
5,192,884                       07/597,043                       03/09/93
5,192,888                       07/759,605                       03/09/93
5,192,894                       07/807,278                       03/09/93
5,192,895                       07/851,332                       03/09/93
5,192,897                       07/869,867                       03/09/93
5,192,917                       07/801,938                       03/09/93
5,192,919                       07/770,392                       03/09/93
5,192,934                       07/788,697                       03/09/93
5,192,936                       07/748,457                       03/09/93
5,192,938                       07/681,579                       03/09/93
5,192,960                       07/672,434                       03/09/93
5,192,970                       07/760,018                       03/09/93
5,192,981                       07/516,784                       03/09/93
5,192,994                       07/573,756                       03/09/93
5,193,005                       07/863,533                       03/09/93
5,193,039                       07/686,596                       03/09/93
5,193,045                       07/723,182                       03/09/93
5,193,054                       07/781,920                       03/09/93
5,193,063                       07/518,718                       03/09/93
5,193,066                       07/493,471                       03/09/93
5,193,069                       07/829,628                       03/09/93
5,193,081                       07/486,385                       03/09/93
5,193,083                       07/888,962                       03/09/93
5,193,093                       07/470,793                       03/09/93
5,193,096                       07/801,520                       03/09/93
5,193,099                       07/795,792                       03/09/93
5,193,112                       07/645,905                       03/09/93
5,193,113                       07/737,355                       03/09/93
5,193,114                       07/742,314                       03/09/93
5,193,115                       07/824,025                       03/09/93
5,193,120                       07/661,679                       03/09/93
5,193,121                       07/740,165                       03/09/93
5,193,127                       07/677,705                       03/09/93
5,193,136                       07/799,716                       03/09/93
5,193,138                       07/686,748                       03/09/93
5,193,153                       07/459,407                       03/09/93
5,193,165                       07/450,139                       03/09/93
5,193,168                       07/754,339                       03/09/93
5,193,173                       07/428,878                       03/09/93
5,193,174                       07/557,035                       03/09/93
5,193,188                       07/660,762                       03/09/93
5,193,206                       07/926,366                       03/09/93
5,193,213                       07/499,030                       03/09/93

                    PATENTS WHICH EXPIRED ON March 11, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

5,608,912                       08/630,446                       03/11/97
5,608,913                       08/407,013                       03/11/97
5,608,914                       08/342,600                       03/11/97
5,608,921                       08/526,514                       03/11/97
5,608,925                       08/492,172                       03/11/97
5,608,928                       08/656,765                       03/11/97
5,608,929                       08/584,406                       03/11/97
5,608,930                       08/438,528                       03/11/97
5,608,934                       08/319,970                       03/11/97
5,608,941                       08/428,020                       03/11/97
5,608,942                       08/253,313                       03/11/97
5,608,950                       08/563,095                       03/11/97
5,608,952                       08/496,576                       03/11/97
5,608,955                       08/578,065                       03/11/97
5,608,956                       08/609,526                       03/11/97
5,608,963                       08/557,706                       03/11/97
5,608,965                       08/466,464                       03/11/97
5,608,975                       08/657,048                       03/11/97
5,608,983                       08/526,692                       03/11/97
5,608,984                       08/623,138                       03/11/97
5,608,990                       08/524,545                       03/11/97
5,608,992                       08/493,354                       03/11/97
5,608,995                       08/518,556                       03/11/97
5,608,998                       08/400,900                       03/11/97
5,609,002                       08/570,900                       03/11/97
5,609,003                       08/556,380                       03/11/97
5,609,011                       08/539,901                       03/11/97
5,609,012                       08/529,081                       03/11/97
5,609,033                       08/585,446                       03/11/97
5,609,034                       08/501,938                       03/11/97
5,609,039                       08/449,018                       03/11/97
5,609,044                       08/588,743                       03/11/97
5,609,047                       08/467,412                       03/11/97
5,609,049                       08/413,478                       03/11/97
5,609,050                       08/616,338                       03/11/97
5,609,051                       08/515,993                       03/11/97
5,609,060                       08/431,052                       03/11/97
5,609,065                       08/469,402                       03/11/97
5,609,078                       08/527,637                       03/11/97
5,609,081                       08/413,455                       03/11/97
5,609,092                       08/670,218                       03/11/97
5,609,104                       08/444,456                       03/11/97
5,609,115                       08/436,926                       03/11/97
5,609,118                       08/385,908                       03/11/97
5,609,119                       08/588,732                       03/11/97
5,609,120                       08/403,680                       03/11/97
5,609,122                       08/572,698                       03/11/97
5,609,130                       08/481,416                       03/11/97
5,609,137                       08/648,037                       03/11/97
5,609,149                       08/539,332                       03/11/97
5,609,163                       08/578,858                       03/11/97
5,609,165                       08/204,190                       03/11/97
5,609,169                       08/574,282                       03/11/97
5,609,170                       08/549,254                       03/11/97
5,609,171                       08/600,733                       03/11/97
5,609,176                       08/369,353                       03/11/97
5,609,182                       08/436,448                       03/11/97
5,609,185                       08/455,321                       03/11/97
5,609,189                       08/388,527                       03/11/97
5,609,191                       08/384,161                       03/11/97
5,609,193                       08/516,064                       03/11/97
5,609,194                       08/490,305                       03/11/97
5,609,196                       08/675,811                       03/11/97
5,609,197                       08/570,962                       03/11/97
5,609,198                       08/360,458                       03/11/97
5,609,200                       08/277,925                       03/11/97
5,609,209                       08/504,879                       03/11/97
5,609,213                       08/532,490                       03/11/97
5,609,214                       08/374,952                       03/11/97
5,609,215                       08/642,917                       03/11/97
5,609,222                       08/452,294                       03/11/97
5,609,224                       08/455,299                       03/11/97
5,609,231                       08/502,719                       03/11/97
5,609,249                       08/487,687                       03/11/97
5,609,251                       08/566,236                       03/11/97
5,609,252                       08/426,028                       03/11/97
5,609,257                       08/437,406                       03/11/97
5,609,258                       08/504,420                       03/11/97
5,609,259                       08/405,091                       03/11/97
5,609,260                       08/596,512                       03/11/97
5,609,263                       08/630,887                       03/11/97
5,609,267                       08/506,748                       03/11/97
5,609,277                       08/502,383                       03/11/97
5,609,282                       08/489,590                       03/11/97
5,609,283                       08/472,094                       03/11/97
5,609,292                       08/449,632                       03/11/97
5,609,296                       08/537,865                       03/11/97
5,609,301                       08/588,590                       03/11/97
5,609,307                       08/394,263                       03/11/97
5,609,311                       08/543,141                       03/11/97
5,609,319                       08/547,128                       03/11/97
5,609,321                       08/494,931                       03/11/97
5,609,322                       08/563,240                       03/11/97
5,609,323                       08/516,971                       03/11/97
5,609,325                       08/403,179                       03/11/97
5,609,328                       08/344,825                       03/11/97
5,609,332                       08/558,692                       03/11/97
5,609,336                       08/641,577                       03/11/97
5,609,337                       08/500,053                       03/11/97
5,609,340                       08/599,366                       03/11/97
5,609,341                       08/614,002                       03/11/97
5,609,347                       08/443,401                       03/11/97
5,609,351                       08/343,783                       03/11/97
5,609,357                       08/426,927                       03/11/97
5,609,360                       08/445,652                       03/11/97
5,609,369                       08/491,438                       03/11/97
5,609,371                       08/578,770                       03/11/97
5,609,372                       08/348,202                       03/11/97
5,609,378                       08/519,190                       03/11/97
5,609,379                       08/564,762                       03/11/97
5,609,389                       08/506,109                       03/11/97
5,609,399                       08/530,232                       03/11/97
5,609,400                       08/305,655                       03/11/97
5,609,406                       08/313,066                       03/11/97
5,609,410                       08/044,182                       03/11/97
5,609,416                       08/657,956                       03/11/97
5,609,417                       08/345,837                       03/11/97
5,609,422                       08/297,094                       03/11/97
5,609,425                       08/394,650                       03/11/97
5,609,429                       08/449,875                       03/11/97
5,609,436                       08/568,420                       03/11/97
5,609,454                       08/374,171                       03/11/97
5,609,460                       08/403,877                       03/11/97
5,609,461                       08/554,592                       03/11/97
5,609,473                       08/614,527                       03/11/97
5,609,479                       08/522,305                       03/11/97
5,609,480                       08/572,010                       03/11/97
5,609,482                       08/325,238                       03/11/97
5,609,483                       08/324,767                       03/11/97
5,609,486                       08/314,961                       03/11/97
5,609,488                       08/195,755                       03/11/97
5,609,490                       08/391,844                       03/11/97
5,609,491                       08/402,079                       03/11/97
5,609,492                       08/547,149                       03/11/97
5,609,506                       08/582,935                       03/11/97
5,609,507                       08/554,258                       03/11/97
5,609,518                       08/327,283                       03/11/97
5,609,520                       08/523,016                       03/11/97
5,609,521                       08/543,265                       03/11/97
5,609,530                       08/522,442                       03/11/97
5,609,531                       08/465,408                       03/11/97
5,609,533                       08/568,401                       03/11/97
5,609,536                       08/489,810                       03/11/97
5,609,539                       08/492,097                       03/11/97
5,609,557                       08/637,300                       03/11/97
5,609,558                       08/035,577                       03/11/97
5,609,559                       08/548,642                       03/11/97
5,609,567                       08/405,223                       03/11/97
5,609,572                       08/256,326                       03/11/97
5,609,574                       08/241,428                       03/11/97
5,609,575                       08/417,434                       03/11/97
5,609,577                       08/593,046                       03/11/97
5,609,582                       08/422,255                       03/11/97
5,609,597                       08/433,627                       03/11/97
5,609,599                       08/508,323                       03/11/97
5,609,607                       08/313,856                       03/11/97
5,609,628                       08/425,833                       03/11/97
5,609,629                       08/484,532                       03/11/97
5,609,653                       08/502,606                       03/11/97
5,609,654                       08/455,746                       03/11/97
5,609,664                       08/446,889                       03/11/97
5,609,683                       08/458,400                       03/11/97
5,609,685                       08/397,389                       03/11/97
5,609,693                       08/154,871                       03/11/97
5,609,709                       08/348,899                       03/11/97
5,609,711                       08/574,270                       03/11/97
5,609,717                       08/267,394                       03/11/97
5,609,723                       08/489,075                       03/11/97
5,609,730                       08/360,123                       03/11/97
5,609,755                       08/503,391                       03/11/97
5,609,757                       08/193,691                       03/11/97
5,609,758                       08/512,087                       03/11/97
5,609,760                       08/431,433                       03/11/97
5,609,761                       08/527,139                       03/11/97
5,609,762                       08/321,302                       03/11/97
5,609,764                       08/382,185                       03/11/97
5,609,766                       08/549,825                       03/11/97
5,609,768                       08/424,074                       03/11/97
5,609,780                       08/337,799                       03/11/97
5,609,786                       08/507,560                       03/11/97
5,609,802                       08/612,031                       03/11/97
5,609,804                       08/257,977                       03/11/97
5,609,816                       08/639,778                       03/11/97
5,609,836                       08/337,664                       03/11/97
5,609,845                       08/385,529                       03/11/97
5,609,855                       08/544,741                       03/11/97
5,609,866                       08/163,609                       03/11/97
5,609,869                       08/453,779                       03/11/97
5,609,872                       07/969,305                       03/11/97
5,609,874                       08/398,865                       03/11/97
5,609,876                       08/447,925                       03/11/97
5,609,877                       08/351,104                       03/11/97
5,609,894                       08/394,959                       03/11/97
5,609,914                       08/433,275                       03/11/97
5,609,933                       08/508,049                       03/11/97
5,609,936                       08/265,729                       03/11/97
5,609,941                       08/503,061                       03/11/97
5,609,947                       08/534,309                       03/11/97
5,609,966                       08/351,129                       03/11/97
5,609,985                       08/309,400                       03/11/97
5,609,986                       08/638,068                       03/11/97
5,609,993                       08/318,559                       03/11/97
5,610,016                       08/413,279                       03/11/97
5,610,025                       08/092,425                       03/11/97
5,610,045                       08/458,770                       03/11/97
5,610,064                       08/198,044                       03/11/97
5,610,071                       08/549,484                       03/11/97
5,610,125                       08/475,150                       03/11/97
5,610,131                       08/537,751                       03/11/97
5,610,140                       08/284,068                       03/11/97
5,610,141                       08/362,411                       03/11/97
5,610,143                       08/493,043                       03/11/97
5,610,153                       08/454,106                       03/11/97
5,610,155                       08/457,061                       03/11/97
5,610,171                       08/368,253                       03/11/97
5,610,178                       08/287,984                       03/11/97
5,610,181                       08/529,394                       03/11/97
5,610,183                       08/167,870                       03/11/97
5,610,186                       08/041,060                       03/11/97
5,610,195                       08/351,336                       03/11/97
5,610,198                       08/210,519                       03/11/97
5,610,202                       08/361,859                       03/11/97
5,610,210                       08/495,581                       03/11/97
5,610,211                       08/552,043                       03/11/97
5,610,221                       08/533,808                       03/11/97
5,610,224                       08/695,324                       03/11/97
5,610,236                       08/393,322                       03/11/97
5,610,251                       08/460,252                       03/11/97
5,610,253                       08/501,263                       03/11/97
5,610,276                       07/702,771                       03/11/97
5,610,294                       08/197,630                       03/11/97
5,610,300                       08/469,045                       03/11/97
5,610,304                       08/453,058                       03/11/97
5,610,305                       08/561,655                       03/11/97
5,610,307                       08/404,478                       03/11/97
5,610,309                       08/478,674                       03/11/97
5,610,312                       08/502,267                       03/11/97
5,610,317                       08/461,803                       03/11/97
5,610,320                       08/450,138                       03/11/97
5,610,336                       08/370,290                       03/11/97
5,610,345                       08/583,427                       03/11/97
5,610,348                       07/854,492                       03/11/97
5,610,356                       08/503,527                       03/11/97
5,610,368                       08/188,726                       03/11/97
5,610,370                       08/491,847                       03/11/97
5,610,373                       08/094,581                       03/11/97
5,610,396                       08/513,009                       03/11/97
5,610,448                       08/280,339                       03/11/97
5,610,452                       08/445,827                       03/11/97
5,610,456                       08/435,180                       03/11/97
5,610,459                       08/301,425                       03/11/97
5,610,477                       08/233,816                       03/11/97
5,610,490                       08/548,064                       03/11/97
5,610,494                       08/295,865                       03/11/97
5,610,512                       08/224,129                       03/11/97
5,610,514                       08/505,249                       03/11/97
5,610,515                       08/540,496                       03/11/97
5,610,527                       08/392,745                       03/11/97
5,610,531                       08/369,391                       03/11/97
5,610,532                       08/509,325                       03/11/97
5,610,550                       08/190,329                       03/11/97
5,610,558                       08/552,136                       03/11/97
5,610,568                       08/280,500                       03/11/97
5,610,578                       08/645,295                       03/11/97
5,610,579                       08/557,889                       03/11/97
5,610,580                       08/511,435                       03/11/97
5,610,585                       08/588,346                       03/11/97
5,610,586                       08/391,416                       03/11/97
5,610,587                       08/428,108                       03/11/97
5,610,596                       08/312,607                       03/11/97
5,610,598                       08/619,289                       03/11/97
5,610,599                       08/430,193                       03/11/97
5,610,603                       08/535,509                       03/11/97
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