United States Patent and Trademark Office OG Notices: 11 December 2001

                        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 October 10, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                           Issue
Number                            Number                            Date

4,872,217                       07/167,161                      10/10/89
4,872,218                       07/161,747                      10/10/89
4,872,226                       07/202,532                      10/10/89
4,872,233                       07/276,653                      10/10/89
4,872,256                       07/246,256                      10/10/89
4,872,257                       06/915,275                      10/10/89
4,872,258                       07/247,512                      10/10/89
4,872,263                       07/252,822                      10/10/89
4,872,264                       07/142,654                      10/10/89
4,872,265                       07/188,856                      10/10/89
4,872,273                       07/226,142                      10/10/89
4,872,287                       07/193,536                      10/10/89
4,872,293                       07/017,345                      10/10/89
4,872,298                       07/155,586                      10/10/89
4,872,301                       07/206,039                      10/10/89
4,872,302                       07/227,340                      10/10/89
4,872,305                       07/244,629                      10/10/89
4,872,307                       07/049,650                      10/10/89
4,872,317                       07/261,801                      10/10/89
4,872,333                       06/849,549                      10/10/89
4,872,345                       07/175,028                      10/10/89
4,872,348                       07/149,376                      10/10/89
4,872,357                       07/227,932                      10/10/89
4,872,368                       07/225,287                      10/10/89
4,872,381                       07/218,186                      10/10/89
4,872,387                       07/185,879                      10/10/89
4,872,391                       07/131,832                      10/10/89
4,872,394                       07/149,896                      10/10/89
4,872,415                       07/146,863                      10/10/89
4,872,416                       06/818,769                      10/10/89
4,872,417                       06/881,783                      10/10/89
4,872,422                       07/164,188                      10/10/89
4,872,449                       07/097,523                      10/10/89
4,872,450                       06/759,628                      10/10/89
4,872,453                       07/292,224                      10/10/89
4,872,481                       06/873,862                      10/10/89
4,872,485                       07/137,065                      10/10/89
4,872,497                       07/137,214                      10/10/89
4,872,504                       07/135,921                      10/10/89
4,872,506                       07/170,999                      10/10/89
4,872,515                       07/108,089                      10/10/89
4,872,531                       07/160,587                      10/10/89
4,872,533                       07/275,390                      10/10/89
4,872,536                       07/100,103                      10/10/89
4,872,543                       07/041,197                      10/10/89
4,872,545                       07/194,214                      10/10/89
4,872,551                       07/320,501                      10/10/89
4,872,560                       07/076,295                      10/10/89
4,872,566                       07/196,445                      10/10/89
4,872,571                       07/299,780                      10/10/89
4,872,572                       07/288,972                      10/10/89
4,872,573                       07/195,095                      10/10/89
4,872,580                       07/304,916                      10/10/89
4,872,587                       07/216,203                      10/10/89
4,872,591                       07/122,794                      10/10/89
4,872,600                       07/190,253                      10/10/89
4,872,604                       07/215,626                      10/10/89
4,872,618                       07/189,644                      10/10/89
4,872,626                       07/116,837                      10/10/89
4,872,640                       07/185,082                      10/10/89
4,872,647                       07/102,036                      10/10/89
4,872,652                       07/257,140                      10/10/89
4,872,653                       07/180,159                      10/10/89
4,872,654                       07/156,991                      10/10/89
4,872,655                       07/156,415                      10/10/89
4,872,658                       07/197,203                      10/10/89
4,872,660                       07/274,747                      10/10/89
4,872,666                       07/167,539                      10/10/89
4,872,682                       07/108,163                      10/10/89
4,872,684                       07/289,610                      10/10/89
4,872,726                       07/091,299                      10/10/89
4,872,727                       07/253,601                      10/10/89
4,872,729                       07/097,879                      10/10/89
4,872,733                       07/291,802                      10/10/89
4,872,735                       07/068,335                      10/10/89
4,872,739                       07/193,162                      10/10/89
4,872,748                       06/733,567                      10/10/89
4,872,749                       06/650,922                      10/10/89
4,872,752                       07/100,287                      10/10/89
4,872,754                       07/105,880                      10/10/89
4,872,761                       07/194,070                      10/10/89
4,872,781                       07/273,451                      10/10/89
4,872,782                       07/035,449                      10/10/89
4,872,793                       07/252,998                      10/10/89
4,872,798                       07/059,263                      10/10/89
4,872,836                       06/721,240                      10/10/89
4,872,843                       07/123,160                      10/10/89
4,872,846                       07/222,655                      10/10/89
4,872,848                       07/266,892                      10/10/89
4,872,849                       06/678,369                      10/10/89
4,872,856                       07/323,638                      10/10/89
4,872,857                       07/235,288                      10/10/89
4,872,859                       07/193,114                      10/10/89
4,872,860                       07/197,710                      10/10/89
4,872,867                       07/317,108                      10/10/89
4,872,869                       07/210,910                      10/10/89
4,872,873                       07/133,586                      10/10/89
4,872,879                       07/099,778                      10/10/89
4,872,885                       07/171,866                      10/10/89
4,872,888                       07/154,298                      10/10/89
4,872,890                       07/270,022                      10/10/89
4,872,893                       07/254,528                      10/10/89
4,872,894                       07/202,659                      10/10/89
4,872,898                       07/312,120                      10/10/89
4,872,903                       07/252,216                      10/10/89
4,872,904                       07/201,507                      10/10/89
4,872,916                       07/248,002                      10/10/89
4,872,917                       06/818,452                      10/10/89
4,872,929                       07/237,773                      10/10/89
4,872,941                       07/118,601                      10/10/89
4,872,948                       06/471,861                      10/10/89
4,872,950                       07/121,795                      10/10/89
4,872,959                       07/102,681                      10/10/89
4,872,966                       07/124,970                      10/10/89
4,872,973                       07/315,237                      10/10/89
4,872,990                       07/242,721                      10/10/89
4,872,997                       07/231,824                      10/10/89
4,872,998                       07/205,345                      10/10/89
4,873,006                       07/239,586                      10/10/89
4,873,007                       07/249,607                      10/10/89
4,873,010                       07/039,775                      10/10/89
4,873,016                       07/057,075                      10/10/89
4,873,020                       07/253,136                      10/10/89
4,873,022                       07/139,792                      10/10/89
4,873,024                       07/165,521                      10/10/89
4,873,028                       07/158,603                      10/10/89
4,873,030                       07/214,463                      10/10/89
4,873,034                       07/223,123                      10/10/89
4,873,038                       07/069,732                      10/10/89
4,873,052                       06/899,788                      10/10/89
4,873,053                       07/155,604                      10/10/89
4,873,055                       07/287,839                      10/10/89
4,873,058                       07/162,538                      10/10/89
4,873,068                       07/250,053                      10/10/89
4,873,069                       07/284,910                      10/10/89
4,873,081                       07/031,241                      10/10/89
4,873,084                       07/134,704                      10/10/89
4,873,085                       07/169,914                      10/10/89
4,873,095                       07/116,319                      10/10/89
4,873,108                       06/858,751                      10/10/89
4,873,126                       07/232,209                      10/10/89
4,873,129                       07/156,457                      10/10/89
4,873,131                       07/172,142                      10/10/89
4,873,149                       07/177,524                      10/10/89
4,873,164                       07/192,456                      10/10/89
4,873,165                       07/144,006                      10/10/89
4,873,171                       07/188,897                      10/10/89
4,873,175                       06/947,332                      10/10/89
4,873,180                       07/178,251                      10/10/89
4,873,188                       06/738,612                      10/10/89
4,873,190                       06/666,988                      10/10/89
4,873,196                       06/771,389                      10/10/89
4,873,204                       07/270,415                      10/10/89
4,873,206                       07/215,191                      10/10/89
4,873,207                       07/189,665                      10/10/89
4,873,224                       07/197,731                      10/10/89
4,873,225                       07/158,628                      10/10/89
4,873,229                       06/939,141                      10/10/89
4,873,236                       07/136,212                      10/10/89
4,873,237                       06/866,636                      10/10/89
4,873,241                       07/265,087                      10/10/89
4,873,244                       07/156,363                      10/10/89
4,873,250                       07/218,993                      10/10/89
4,873,257                       07/230,101                      10/10/89
4,873,260                       07/212,769                      10/10/89
4,873,262                       07/132,372                      10/10/89
4,873,271                       07/342,918                      10/10/89
4,873,280                       07/317,763                      10/10/89
4,873,301                       07/147,722                      10/10/89
4,873,304                       07/119,024                      10/10/89
4,873,306                       07/215,202                      10/10/89
4,873,308                       07/251,418                      10/10/89
4,873,338                       07/123,920                      10/10/89
4,873,339                       07/284,021                      10/10/89
4,873,342                       06/852,710                      10/10/89
4,873,344                       07/124,820                      10/10/89
4,873,350                       07/253,955                      10/10/89
4,873,354                       07/184,250                      10/10/89
4,873,359                       07/103,635                      10/10/89
4,873,369                       07/022,235                      10/10/89
4,873,372                       07/148,386                      10/10/89
4,873,377                       07/251,787                      10/10/89
4,873,380                       07/004,508                      10/10/89
4,873,399                       07/286,700                      10/10/89
4,873,400                       07/216,294                      10/10/89
4,873,404                       07/233,102                      10/10/89
4,873,407                       07/312,438                      10/10/89
4,873,409                       07/113,646                      10/10/89
4,873,421                       06/919,810                      10/10/89
4,873,433                       07/165,837                      10/10/89
4,873,439                       07/211,776                      10/10/89
4,873,446                       07/218,472                      10/10/89
4,873,474                       07/341,431                      10/10/89
4,873,479                       07/246,712                      10/10/89
4,873,483                       07/273,081                      10/10/89
4,873,485                       07/218,178                      10/10/89
4,873,489                       07/163,384                      10/10/89
4,873,494                       06/589,250                      10/10/89
4,873,497                       07/252,204                      10/10/89
4,873,500                       07/188,440                      10/10/89
4,873,502                       07/263,654                      10/10/89
4,873,504                       07/018,626                      10/10/89
4,873,507                       07/108,757                      10/10/89
4,873,520                       07/115,029                      10/10/89
4,873,527                       07/141,455                      10/10/89
4,873,529                       07/286,572                      10/10/89
4,873,544                       07/203,891                      10/10/89
4,873,554                       07/213,027                      10/10/89
4,873,560                       07/155,698                      10/10/89
4,873,561                       07/183,111                      10/10/89
4,873,568                       07/246,054                      10/10/89
4,873,569                       07/193,829                      10/10/89
4,873,573                       07/127,664                      10/10/89
4,873,574                       07/288,061                      10/10/89
4,873,582                       07/210,167                      10/10/89
4,873,585                       07/120,917                      10/10/89
4,873,590                       07/162,102                      10/10/89
4,873,609                       07/209,185                      10/10/89
4,873,626                       06/943,314                      10/10/89
4,873,644                       07/097,565                      10/10/89
4,873,659                       07/186,897                      10/10/89
4,873,663                       07/185,653                      10/10/89
4,873,675                       07/205,291                      10/10/89
4,873,678                       07/130,637                      10/10/89
4,873,684                       07/246,923                      10/10/89
4,873,698                       07/249,122                      10/10/89
4,873,703                       07/235,746                      10/10/89
4,873,710                       07/144,469                      10/10/89

                   PATENTS WHICH EXPIRED ON October 5, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                           Issue
Number                            Number                            Date

5,249,310                       07/897,758                      10/05/93
5,249,315                       07/729,494                      10/05/93
5,249,316                       08/024,344                      10/05/93
5,249,318                       07/895,570                      10/05/93
5,249,323                       07/913,145                      10/05/93
5,249,324                       07/922,247                      10/05/93
5,249,325                       07/995,954                      10/05/93
5,249,327                       07/935,570                      10/05/93
5,249,330                       07/891,927                      10/05/93
5,249,336                       07/957,016                      10/05/93
5,249,337                       07/895,273                      10/05/93
5,249,340                       07/720,113                      10/05/93
5,249,361                       07/882,032                      10/05/93
5,249,367                       07/848,538                      10/05/93
5,249,374                       07/822,613                      10/05/93
5,249,377                       08/015,887                      10/05/93
5,249,379                       07/945,100                      10/05/93
5,249,390                       07/743,172                      10/05/93
5,249,399                       07/692,934                      10/05/93
5,249,412                       07/864,900                      10/05/93
5,249,417                       07/766,610                      10/05/93
5,249,420                       07/826,901                      10/05/93
5,249,439                       07/694,794                      10/05/93
5,249,441                       07/816,167                      10/05/93
5,249,452                       08/018,671                      10/05/93
5,249,454                       07/826,799                      10/05/93
5,249,471                       07/831,061                      10/05/93
5,249,472                       07/813,141                      10/05/93
5,249,474                       07/844,237                      10/05/93
5,249,477                       07/674,529                      10/05/93
5,249,479                       07/841,208                      10/05/93
5,249,484                       07/890,704                      10/05/93
5,249,489                       07/940,497                      10/05/93
5,249,492                       07/656,211                      10/05/93
5,249,500                       08/011,788                      10/05/93
5,249,506                       07/832,381                      10/05/93
5,249,512                       07/855,722                      10/05/93
5,249,514                       08/015,360                      10/05/93
5,249,517                       07/980,612                      10/05/93
5,249,520                       07/712,259                      10/05/93
5,249,529                       07/991,448                      10/05/93
5,249,535                       07/995,942                      10/05/93
5,249,540                       07/735,389                      10/05/93
5,249,546                       07/887,097                      10/05/93
5,249,551                       07/847,697                      10/05/93
5,249,559                       07/996,468                      10/05/93
5,249,579                       07/629,180                      10/05/93
5,249,582                       07/753,180                      10/05/93
5,249,590                       07/931,352                      10/05/93
5,249,594                       08/001,691                      10/05/93
5,249,597                       07/958,658                      10/05/93
5,249,612                       07/919,708                      10/05/93
5,249,619                       07/785,311                      10/05/93
5,249,620                       07/863,497                      10/05/93
5,249,622                       07/867,503                      10/05/93
5,249,623                       07/558,887                      10/05/93
5,249,625                       07/836,869                      10/05/93
5,249,636                       07/875,737                      10/05/93
5,249,640                       07/911,568                      10/05/93
5,249,657                       07/878,424                      10/05/93
5,249,658                       07/822,078                      10/05/93
5,249,663                       07/771,638                      10/05/93
5,249,667                       07/593,113                      10/05/93
5,249,669                       07/996,625                      10/05/93
5,249,674                       07/846,880                      10/05/93
5,249,676                       08/035,537                      10/05/93
5,249,678                       07/888,986                      10/05/93
5,249,679                       07/878,298                      10/05/93
5,249,680                       07/946,938                      10/05/93
5,249,684                       07/947,766                      10/05/93
5,249,685                       07/916,194                      10/05/93
5,249,686                       07/806,691                      10/05/93
5,249,687                       07/690,175                      10/05/93
5,249,688                       07/868,085                      10/05/93
5,249,689                       07/927,826                      10/05/93
5,249,697                       07/885,193                      10/05/93
5,249,703                       08/037,917                      10/05/93
5,249,705                       07/929,697                      10/05/93
5,249,708                       07/947,545                      10/05/93
5,249,711                       07/955,557                      10/05/93
5,249,714                       07/955,463                      10/05/93
5,249,715                       07/960,697                      10/05/93
5,249,718                       07/852,080                      10/05/93
5,249,720                       07/876,769                      10/05/93
5,249,722                       07/866,203                      10/05/93
5,249,725                       07/914,523                      10/05/93
5,249,734                       07/668,702                      10/05/93
5,249,738                       07/629,251                      10/05/93
5,249,756                       07/689,629                      10/05/93
5,249,757                       07/808,900                      10/05/93
5,249,758                       07/635,617                      10/05/93
5,249,762                       07/570,342                      10/05/93
5,249,767                       07/956,278                      10/05/93
5,249,772                       07/812,159                      10/05/93
5,249,777                       07/768,238                      10/05/93
5,249,781                       07/833,669                      10/05/93
5,249,782                       07/985,108                      10/05/93
5,249,786                       07/853,629                      10/05/93
5,249,791                       07/900,837                      10/05/93
5,249,792                       07/919,366                      10/05/93
5,249,794                       07/901,185                      10/05/93
5,249,799                       07/918,094                      10/05/93
5,249,802                       07/484,053                      10/05/93
5,249,807                       07/981,107                      10/05/93
5,249,810                       07/972,307                      10/05/93
5,249,811                       07/744,378                      10/05/93
5,249,816                       07/979,768                      10/05/93
5,249,817                       07/955,240                      10/05/93
5,249,826                       07/771,469                      10/05/93
5,249,827                       07/874,555                      10/05/93
5,249,829                       07/908,339                      10/05/93
5,249,841                       07/809,145                      10/05/93
5,249,854                       07/997,154                      10/05/93
5,249,863                       07/994,236                      10/05/93
5,249,875                       07/757,316                      10/05/93
5,249,878                       07/991,110                      10/05/93
5,249,887                       07/781,810                      10/05/93
5,249,891                       07/876,844                      10/05/93
5,249,900                       07/946,650                      10/05/93
5,249,901                       07/954,534                      10/05/93
5,249,904                       07/821,891                      10/05/93
5,249,913                       07/887,497                      10/05/93
5,249,927                       07/972,901                      10/05/93
5,249,929                       07/566,931                      10/05/93
5,249,930                       07/960,244                      10/05/93
5,249,935                       07/855,637                      10/05/93
5,249,938                       07/777,565                      10/05/93
5,249,942                       07/840,191                      10/05/93
5,249,944                       07/888,607                      10/05/93
5,249,945                       07/846,908                      10/05/93
5,249,947                       07/773,941                      10/05/93
5,249,951                       07/782,572                      10/05/93
5,249,954                       07/909,911                      10/05/93
5,249,963                       07/826,410                      10/05/93
5,249,965                       07/926,050                      10/05/93
5,249,967                       07/729,466                      10/05/93
5,249,969                       07/703,905                      10/05/93
5,249,973                       07/909,676                      10/05/93
5,249,976                       07/969,378                      10/05/93
5,249,978                       07/914,811                      10/05/93
5,249,988                       07/893,385                      10/05/93
5,249,990                       07/663,924                      10/05/93
5,249,992                       07/998,293                      10/05/93
5,249,999                       07/829,714                      10/05/93
5,250,014                       07/957,229                      10/05/93
5,250,019                       07/990,557                      10/05/93
5,250,032                       07/806,368                      10/05/93
5,250,047                       07/780,045                      10/05/93
5,250,057                       07/902,210                      10/05/93
5,250,060                       07/904,552                      10/05/93
5,250,061                       07/550,122                      10/05/93
5,250,064                       07/957,221                      10/05/93
5,250,065                       07/944,737                      10/05/93
5,250,070                       07/705,698                      10/05/93
5,250,072                       07/624,981                      10/05/93
5,250,078                       07/881,588                      10/05/93
5,250,081                       07/926,472                      10/05/93
5,250,100                       07/306,094                      10/05/93
5,250,117                       07/812,992                      10/05/93
5,250,119                       07/910,043                      10/05/93
5,250,128                       07/770,344                      10/05/93
5,250,136                       07/834,673                      10/05/93
5,250,143                       07/901,143                      10/05/93
5,250,149                       07/664,581                      10/05/93
5,250,157                       08/020,397                      10/05/93
5,250,159                       07/713,809                      10/05/93
5,250,160                       07/843,745                      10/05/93
5,250,162                       07/827,731                      10/05/93
5,250,165                       07/803,827                      10/05/93
5,250,171                       07/698,169                      10/05/93
5,250,177                       07/726,184                      10/05/93
5,250,178                       07/897,279                      10/05/93
5,250,180                       07/974,083                      10/05/93
5,250,192                       07/414,228                      10/05/93
5,250,197                       07/926,677                      10/05/93
5,250,203                       07/834,756                      10/05/93
5,250,204                       07/891,628                      10/05/93
5,250,209                       07/869,530                      10/05/93
5,250,223                       07/608,917                      10/05/93
5,250,228                       07/788,655                      10/05/93
5,250,231                       07/761,438                      10/05/93
5,250,249                       07/940,280                      10/05/93
5,250,271                       07/705,017                      10/05/93
5,250,276                       07/811,313                      10/05/93
5,250,278                       07/717,596                      10/05/93
5,250,286                       07/799,294                      10/05/93
5,250,292                       07/897,403                      10/05/93
5,250,297                       07/939,384                      10/05/93
5,250,305                       07/544,562                      10/05/93
5,250,316                       07/858,887                      10/05/93
5,250,317                       07/906,707                      10/05/93
5,250,318                       07/896,138                      10/05/93
5,250,321                       07/851,795                      10/05/93
5,250,331                       07/804,000                      10/05/93
5,250,332                       07/421,123                      10/05/93
5,250,336                       07/834,886                      10/05/93
5,250,338                       07/614,477                      10/05/93
5,250,341                       07/648,511                      10/05/93
5,250,343                       07/881,863                      10/05/93
5,250,350                       07/801,995                      10/05/93
5,250,358                       07/939,223                      10/05/93
5,250,365                       07/789,484                      10/05/93
5,250,372                       07/976,767                      10/05/93
5,250,374                       07/645,984                      10/05/93
5,250,390                       07/772,855                      10/05/93
5,250,410                       07/947,962                      10/05/93
5,250,412                       07/732,423                      10/05/93
5,250,414                       07/719,692                      10/05/93
5,250,416                       07/823,113                      10/05/93
5,250,433                       07/770,766                      10/05/93
5,250,439                       07/990,340                      10/05/93
5,250,441                       08/002,192                      10/05/93
5,250,443                       07/835,016                      10/05/93
5,250,444                       07/842,854                      10/05/93
5,250,471                       07/453,297                      10/05/93
5,250,475                       07/848,154                      10/05/93
5,250,479                       07/869,932                      10/05/93
5,250,480                       07/985,455                      10/05/93
5,250,481                       07/950,165                      10/05/93
5,250,482                       07/933,497                      10/05/93
5,250,484                       07/798,485                      10/05/93
5,250,487                       07/900,839                      10/05/93
5,250,494                       07/773,036                      10/05/93
5,250,504                       08/011,015                      10/05/93
5,250,507                       07/739,871                      10/05/93
5,250,509                       07/839,324                      10/05/93
5,250,522                       07/959,000                      10/05/93
5,250,523                       07/481,993                      10/05/93
5,250,525                       07/833,856                      10/05/93
5,250,537                       07/850,761                      10/05/93
5,250,538                       07/864,734                      10/05/93
5,250,545                       07/621,699                      10/05/93
5,250,546                       07/551,037                      10/05/93
5,250,547                       07/751,491                      10/05/93
5,250,562                       07/829,666                      10/05/93
5,250,566                       07/811,950                      10/05/93
5,250,570                       07/999,690                      10/05/93
5,250,591                       07/680,016                      10/05/93
5,250,592                       07/996,376                      10/05/93
5,250,593                       07/940,375                      10/05/93
5,250,595                       07/859,242                      10/05/93
5,250,596                       08/047,795                      10/05/93
5,250,597                       07/900,749                      10/05/93
5,250,601                       07/939,462                      10/05/93
5,250,617                       07/919,262                      10/05/93
5,250,622                       07/856,379                      10/05/93
5,250,623                       07/721,466                      10/05/93
5,250,633                       07/647,392                      10/05/93
5,250,642                       07/886,215                      10/05/93
5,250,645                       07/879,136                      10/05/93
5,250,648                       07/875,497                      10/05/93
5,250,650                       07/858,822                      10/05/93
5,250,655                       07/934,716                      10/05/93
5,250,665                       07/746,372                      10/05/93
5,250,669                       07/873,490                      10/05/93
5,250,685                       07/949,181                      10/05/93
5,250,687                       07/936,375                      10/05/93
5,250,694                       07/935,957                      10/05/93
5,250,696                       07/860,340                      10/05/93
5,250,697                       07/657,463                      10/05/93
5,250,710                       07/879,335                      10/05/93
5,250,714                       07/761,235                      10/05/93
5,250,725                       07/754,037                      10/05/93
5,250,730                       07/912,416                      10/05/93
5,250,734                       07/889,407                      10/05/93
5,250,735                       07/847,910                      10/05/93
5,250,741                       07/912,372                      10/05/93
5,250,750                       07/942,016                      10/05/93
5,250,753                       07/866,921                      10/05/93
5,250,758                       07/703,724                      10/05/93
5,250,761                       07/842,389                      10/05/93
5,250,766                       07/705,070                      10/05/93
5,250,769                       07/902,847                      10/05/93
5,250,771                       07/752,568                      10/05/93
5,250,772                       07/948,169                      10/05/93
5,250,777                       07/943,099                      10/05/93
5,250,781                       07/780,495                      10/05/93
5,250,786                       07/766,416                      10/05/93
5,250,788                       07/572,620                      10/05/93
5,250,789                       07/786,051                      10/05/93
5,250,794                       07/677,397                      10/05/93
5,250,804                       07/943,346                      10/05/93
5,250,816                       07/824,982                      10/05/93
5,250,817                       07/928,984                      10/05/93
5,250,831                       07/673,823                      10/05/93
5,250,838                       07/474,831                      10/05/93
5,250,841                       08/007,036                      10/05/93
5,250,849                       07/709,938                      10/05/93
5,250,850                       07/640,810                      10/05/93
5,250,851                       07/717,375                      10/05/93
5,250,870                       07/857,349                      10/05/93
5,250,872                       07/730,716                      10/05/93
5,250,873                       07/815,004                      10/05/93
5,250,877                       07/709,942                      10/05/93
5,250,880                       07/965,146                      10/05/93
5,250,887                       07/873,191                      10/05/93
5,250,892                       07/861,003                      10/05/93
5,250,899                       07/744,193                      10/05/93
5,250,912                       07/891,416                      10/05/93
5,250,921                       07/600,199                      10/05/93
5,250,934                       07/636,395                      10/05/93
5,250,936                       07/512,880                      10/05/93
5,250,938                       07/960,572                      10/05/93
5,250,939                       07/787,867                      10/05/93
5,250,943                       07/748,295                      10/05/93
5,250,948                       07/810,230                      10/05/93
5,250,949                       07/392,905                      10/05/93
5,250,955                       07/894,700                      10/05/93
5,250,960                       07/815,218                      10/05/93
5,250,985                       07/780,331                      10/05/93
5,250,995                       07/731,690                      10/05/93
5,251,000                       07/988,782                      10/05/93
5,251,002                       07/841,105                      10/05/93
5,251,009                       08/012,610                      10/05/93
5,251,011                       07/927,872                      10/05/93
5,251,017                       07/721,385                      10/05/93
5,251,019                       07/918,875                      10/05/93
5,251,021                       07/925,281                      10/05/93
5,251,024                       07/662,607                      10/05/93
5,251,027                       07/884,315                      10/05/93
5,251,031                       07/667,963                      10/05/93
5,251,032                       07/842,784                      10/05/93
5,251,039                       07/824,175                      10/05/93
5,251,054                       07/782,177                      10/05/93
5,251,056                       07/923,405                      10/05/93
5,251,060                       07/953,241                      10/05/93
5,251,072                       07/890,760                      10/05/93
5,251,077                       07/715,085                      10/05/93
5,251,081                       08/001,942                      10/05/93
5,251,082                       07/714,561                      10/05/93
5,251,096                       07/935,258                      10/05/93
5,251,100                       07/934,330                      10/05/93
5,251,101                       07/972,384                      10/05/93
5,251,103                       07/912,264                      10/05/93
5,251,104                       07/904,113                      10/05/93
5,251,107                       07/798,737                      10/05/93
5,251,109                       07/927,529                      10/05/93
5,251,117                       07/839,917                      10/05/93
5,251,124                       07/693,635                      10/05/93
5,251,151                       07/634,091                      10/05/93
5,251,160                       07/750,690                      10/05/93
5,251,165                       07/865,474                      10/05/93
5,251,183                       07/910,601                      10/05/93
5,251,186                       07/957,544                      10/05/93
5,251,189                       07/962,353                      10/05/93
5,251,193                       07/765,031                      10/05/93
5,251,197                       07/835,645                      10/05/93
5,251,204                       07/762,338                      10/05/93
5,251,235                       07/764,124                      10/05/93
5,251,240                       07/518,785                      10/05/93
5,251,246                       08/001,928                      10/05/93
5,251,247                       07/768,740                      10/05/93
5,251,251                       07/755,958                      10/05/93
5,251,253                       07/786,707                      10/05/93
5,251,260                       07/741,692                      10/05/93
5,251,264                       07/857,210                      10/05/93
5,251,271                       07/780,009                      10/05/93
5,251,273                       07/870,129                      10/05/93
5,251,283                       07/446,495                      10/05/93
5,251,286                       07/852,036                      10/05/93
5,251,287                       08/000,915                      10/05/93
5,251,297                       07/595,220                      10/05/93
5,251,300                       07/671,839                      10/05/93
5,251,303                       07/297,778                      10/05/93
5,251,307                       07/389,270                      10/05/93
5,251,309                       07/431,188                      10/05/93
5,251,314                       07/534,825                      10/05/93
5,251,315                       07/543,903                      10/05/93
5,251,317                       07/469,209                      10/05/93

                   PATENTS WHICH EXPIRED ON October 7, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                           Issue
Number                            Number                            Date

5,673,436                       08/584,605                      10/07/97
5,673,439                       08/599,414                      10/07/97
5,673,441                       08/653,879                      10/07/97
5,673,442                       08/545,638                      10/07/97
5,673,444                       08/786,238                      10/07/97
5,673,446                       08/412,314                      10/07/97
5,673,448                       08/436,189                      10/07/97
5,673,449                       08/553,439                      10/07/97
5,673,452                       08/698,165                      10/07/97
5,673,455                       08/398,892                      10/07/97
5,673,456                       08/571,043                      10/07/97
5,673,458                       08/511,801                      10/07/97
5,673,460                       08/470,226                      10/07/97
5,673,465                       08/658,127                      10/07/97
5,673,466                       08/617,109                      10/07/97
5,673,471                       08/527,493                      10/07/97
5,673,492                       08/434,028                      10/07/97
5,673,494                       08/631,582                      10/07/97
5,673,495                       08/542,385                      10/07/97
5,673,500                       08/570,325                      10/07/97
5,673,502                       08/505,686                      10/07/97
5,673,512                       08/583,182                      10/07/97
5,673,518                       08/730,714                      10/07/97
5,673,519                       08/550,758                      10/07/97
5,673,520                       08/249,721                      10/07/97
5,673,522                       08/389,753                      10/07/97
5,673,524                       08/631,086                      10/07/97
5,673,532                       08/530,382                      10/07/97
5,673,534                       08/494,286                      10/07/97
5,673,544                       08/555,974                      10/07/97
5,673,546                       08/578,019                      10/07/97
5,673,548                       08/584,621                      10/07/97
5,673,550                       08/455,193                      10/07/97
5,673,568                       08/460,781                      10/07/97
5,673,572                       08/763,727                      10/07/97
5,673,573                       08/564,497                      10/07/97
5,673,578                       08/554,654                      10/07/97
5,673,582                       08/597,481                      10/07/97
5,673,586                       08/746,496                      10/07/97
5,673,587                       08/636,190                      10/07/97
5,673,597                       08/601,319                      10/07/97
5,673,601                       08/381,856                      10/07/97
5,673,603                       08/739,731                      10/07/97
5,673,612                       08/591,573                      10/07/97
5,673,617                       08/652,662                      10/07/97
5,673,621                       08/614,482                      10/07/97
5,673,624                       08/622,440                      10/07/97
5,673,626                       08/618,549                      10/07/97
5,673,628                       08/570,916                      10/07/97
5,673,629                       08/571,079                      10/07/97
5,673,631                       08/645,092                      10/07/97
5,673,635                       08/491,304                      10/07/97
5,673,637                       08/144,786                      10/07/97
5,673,640                       08/604,770                      10/07/97
5,673,642                       08/638,159                      10/07/97
5,673,644                       08/701,321                      10/07/97
5,673,645                       08/627,816                      10/07/97
5,673,646                       08/568,951                      10/07/97
5,673,648                       08/541,439                      10/07/97
5,673,649                       08/503,653                      10/07/97
5,673,651                       08/618,899                      10/07/97
5,673,652                       08/549,239                      10/07/97
5,673,657                       08/729,212                      10/07/97
5,673,672                       08/707,412                      10/07/97
5,673,674                       08/625,900                      10/07/97
5,673,678                       08/650,459                      10/07/97
5,673,679                       08/745,331                      10/07/97
5,673,680                       08/490,835                      10/07/97
5,673,706                       08/380,039                      10/07/97
5,673,716                       08/548,063                      10/07/97
5,673,720                       08/530,284                      10/07/97
5,673,721                       08/206,458                      10/07/97
5,673,725                       08/669,861                      10/07/97
5,673,727                       08/377,577                      10/07/97
5,673,734                       08/544,845                      10/07/97
5,673,736                       08/526,588                      10/07/97
5,673,742                       08/588,861                      10/07/97
5,673,757                       08/491,881                      10/07/97
5,673,761                       08/510,748                      10/07/97
5,673,766                       08/657,349                      10/07/97
5,673,772                       08/543,556                      10/07/97
5,673,773                       08/585,460                      10/07/97
5,673,780                       08/603,580                      10/07/97
5,673,786                       08/627,641                      10/07/97
5,673,788                       08/672,945                      10/07/97
5,673,789                       08/739,011                      10/07/97
5,673,795                       08/494,970                      10/07/97
5,673,796                       08/582,479                      10/07/97
5,673,800                       08/515,458                      10/07/97
5,673,801                       08/622,245                      10/07/97
5,673,806                       08/630,768                      10/07/97
5,673,807                       08/372,021                      10/07/97
5,673,808                       08/384,407                      10/07/97
5,673,811                       08/610,748                      10/07/97
5,673,814                       08/596,078                      10/07/97
5,673,817                       08/416,644                      10/07/97
5,673,819                       08/519,915                      10/07/97
5,673,822                       08/464,665                      10/07/97
5,673,828                       08/544,001                      10/07/97
5,673,829                       08/563,571                      10/07/97
5,673,835                       08/505,693                      10/07/97
5,673,837                       08/090,017                      10/07/97
5,673,843                       08/477,994                      10/07/97
5,673,846                       08/518,736                      10/07/97
5,673,847                       08/524,747                      10/07/97
5,673,856                       08/526,148                      10/07/97
5,673,860                       08/584,276                      10/07/97
5,673,862                       08/629,981                      10/07/97
5,673,872                       08/654,109                      10/07/97
5,673,875                       08/380,568                      10/07/97
5,673,879                       08/599,849                      10/07/97
5,673,880                       08/189,280                      10/07/97
5,673,881                       08/584,772                      10/07/97
5,673,883                       08/383,118                      10/07/97
5,673,885                       08/580,455                      10/07/97
5,673,889                       08/535,471                      10/07/97
5,673,893                       08/517,267                      10/07/97
5,673,899                       08/598,502                      10/07/97
5,673,900                       08/377,506                      10/07/97
5,673,910                       08/354,545                      10/07/97
5,673,912                       08/676,070                      10/07/97
5,673,913                       08/659,351                      10/07/97
5,673,914                       08/648,754                      10/07/97
5,673,917                       08/646,869                      10/07/97
5,673,918                       08/439,571                      10/07/97
5,673,921                       08/614,154                      10/07/97
5,673,926                       08/683,260                      10/07/97
5,673,927                       08/523,542                      10/07/97
5,673,928                       08/577,693                      10/07/97
5,673,934                       08/412,075                      10/07/97
5,673,942                       08/495,920                      10/07/97
5,673,948                       08/550,083                      10/07/97
5,673,949                       08/726,122                      10/07/97
5,673,951                       08/607,286                      10/07/97
5,673,952                       08/517,767                      10/07/97
5,673,953                       08/713,797                      10/07/97
5,673,957                       08/595,308                      10/07/97
5,673,960                       08/712,769                      10/07/97
5,673,962                       08/507,146                      10/07/97
5,673,965                       08/675,215                      10/07/97
5,673,970                       08/752,654                      10/07/97
5,673,976                       08/389,057                      10/07/97
5,673,987                       08/703,128                      10/07/97
5,673,993                       08/668,631                      10/07/97
5,674,004                       08/499,172                      10/07/97
5,674,005                       08/414,245                      10/07/97
5,674,010                       08/563,332                      10/07/97
5,674,014                       08/658,836                      10/07/97
5,674,030                       08/339,305                      10/07/97
5,674,038                       08/682,156                      10/07/97
5,674,041                       08/484,671                      10/07/97
5,674,044                       08/500,030                      10/07/97
5,674,045                       08/321,209                      10/07/97
5,674,067                       08/485,806                      10/07/97
5,674,076                       08/388,355                      10/07/97
5,674,088                       08/488,865                      10/07/97
5,674,089                       08/434,622                      10/07/97
5,674,101                       08/464,864                      10/07/97
5,674,102                       08/738,552                      10/07/97
5,674,118                       08/642,847                      10/07/97
5,674,139                       08/700,218                      10/07/97
5,674,140                       08/730,413                      10/07/97
5,674,157                       08/402,463                      10/07/97
5,674,158                       08/580,392                      10/07/97
5,674,163                       08/689,350                      10/07/97
5,674,164                       08/629,050                      10/07/97
5,674,167                       08/546,923                      10/07/97
5,674,168                       08/480,645                      10/07/97
5,674,169                       07/597,600                      10/07/97
5,674,178                       08/662,032                      10/07/97
5,674,185                       08/580,301                      10/07/97
5,674,189                       08/536,681                      10/07/97
5,674,219                       08/319,265                      10/07/97
5,674,235                       08/438,398                      10/07/97
5,674,237                       08/612,451                      10/07/97
5,674,248                       08/486,760                      10/07/97
5,674,275                       08/478,495                      10/07/97
5,674,280                       08/542,513                      10/07/97
5,674,288                       08/221,706                      10/07/97
5,674,315                       08/659,981                      10/07/97
5,674,321                       08/431,178                      10/07/97
5,674,325                       08/480,452                      10/07/97
5,674,331                       08/598,603                      10/07/97
5,674,337                       08/555,154                      10/07/97
5,674,382                       08/584,829                      10/07/97
5,674,388                       08/598,940                      10/07/97
5,674,393                       08/696,199                      10/07/97
5,674,398                       08/496,288                      10/07/97
5,674,428                       08/481,806                      10/07/97
5,674,431                       08/586,636                      10/07/97
5,674,434                       08/669,305                      10/07/97
5,674,445                       08/484,694                      10/07/97
5,674,456                       07/945,046                      10/07/97
5,674,467                       08/513,935                      10/07/97
5,674,490                       08/456,010                      10/07/97
5,674,503                       08/310,207                      10/07/97
5,674,505                       08/284,354                      10/07/97
5,674,506                       08/398,573                      10/07/97
5,674,508                       08/487,848                      10/07/97
5,674,539                       08/505,722                      10/07/97
5,674,541                       08/532,713                      10/07/97
5,674,558                       08/528,046                      10/07/97
5,674,559                       08/421,236                      10/07/97
5,674,568                       08/538,663                      10/07/97
5,674,586                       08/499,642                      10/07/97
5,674,589                       08/446,748                      10/07/97
5,674,604                       08/414,783                      10/07/97
5,674,615                       08/410,041                      10/07/97
5,674,616                       08/384,072                      10/07/97
5,674,618                       08/761,995                      10/07/97
5,674,623                       08/339,448                      10/07/97
5,674,624                       08/168,196                      10/07/97
5,674,627                       08/515,997                      10/07/97
5,674,633                       08/417,681                      10/07/97
5,674,648                       08/465,518                      10/07/97
5,674,657                       08/743,592                      10/07/97
5,674,687                       08/563,864                      10/07/97
5,674,693                       08/214,520                      10/07/97
5,674,700                       07/952,866                      10/07/97
5,674,714                       07/976,034                      10/07/97
5,674,718                       08/200,512                      10/07/97
5,674,721                       08/235,569                      10/07/97
5,674,727                       08/298,189                      10/07/97
5,674,733                       08/161,999                      10/07/97
5,674,744                       08/335,812                      10/07/97
5,674,760                       08/607,120                      10/07/97
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