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 main-
tenance 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 ap-
plicable surcharge.

                  PATENTS WHICH EXPIRED ON September 22, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,694,512                   06/870,818                   09/22/87
4,694,513                   07/006,019                   09/22/87
4,694,532                   06/792,217                   09/22/87
4,694,539                   06/829,534                   09/22/87
4,694,549                   06/831,889                   09/22/87
4,694,557                   06/843,688                   09/22/87
4,694,563                   06/342,912                   09/22/87
4,694,565                   06/856,304                   09/22/87
4,694,566                   06/757,185                   09/22/87
4,694,593                   06/570,643                   09/22/87
4,694,595                   06/876,166                   09/22/87
4,694,600                   06/423,692                   09/22/87
4,694,603                   06/817,453                   09/22/87
4,694,605                   06/891,373                   09/22/87
4,694,607                   06/877,540                   09/22/87
4,694,610                   06/725,703                   09/22/87
4,694,612                   06/916,839                   09/22/87
4,694,615                   06/847,793                   09/22/87
4,694,622                   06/759,446                   09/22/87
4,694,624                   06/820,141                   09/22/87
4,694,626                   06/888,549                   09/22/87
4,694,627                   06/738,611                   09/22/87
4,694,628                   06/854,097                   09/22/87
4,694,631                   06/874,043                   09/22/87
4,694,632                   06/899,645                   09/22/87
4,694,633                   06/929,500                   09/22/87
4,694,637                   06/788,311                   09/22/87
4,694,640                   07/015,561                   09/22/87
4,694,643                   06/819,541                   09/22/87
4,694,644                   06/796,214                   09/22/87
4,694,650                   06/889,697                   09/22/87
4,694,658                   06/762,192                   09/22/87
4,694,660                   06/867,802                   09/22/87
4,694,661                   06/823,925                   09/22/87
4,694,662                   06/901,962                   09/22/87
4,694,677                   06/831,888                   09/22/87
4,694,680                   06/765,435                   09/22/87
4,694,684                   06/829,415                   09/22/87
4,694,685                   06/769,443                   09/22/87
4,694,705                   07/006,252                   09/22/87
4,694,709                   06/772,427                   09/22/87
4,694,712                   06/780,674                   09/22/87
4,694,720                   06/848,591                   09/22/87
4,694,724                   06/747,555                   09/22/87
4,694,725                   06/772,224                   09/22/87
4,694,733                   06/796,416                   09/22/87
4,694,739                   06/852,249                   09/22/87
4,694,747                   06/254,396                   09/22/87
4,694,756                   06/887,221                   09/22/87
4,694,763                   06/427,208                   09/22/87
4,694,778                   06/828,625                   09/22/87
4,694,782                   06/811,497                   09/22/87
4,694,792                   06/729,913                   09/22/87
4,694,793                   06/929,373                   09/22/87
4,694,798                   06/838,817                   09/22/87
4,694,799                   06/787,750                   09/22/87
4,694,802                   06/652,937                   09/22/87
4,694,803                   06/819,454                   09/22/87
4,694,810                   06/813,106                   09/22/87
4,694,819                   06/900,682                   09/22/87
4,694,836                   06/809,635                   09/22/87
4,694,846                   06/905,197                   09/22/87
4,694,852                   06/868,568                   09/22/87
4,694,854                   06/744,068                   09/22/87
4,694,860                   06/826,022                   09/22/87
4,694,866                   06/859,828                   09/22/87
4,694,885                   06/857,921                   09/22/87
4,694,886                   06/856,820                   09/22/87
4,694,894                   06/776,669                   09/22/87
4,694,895                   06/853,473                   09/22/87
4,694,896                   06/921,483                   09/22/87
4,694,908                   06/923,452                   09/22/87
4,694,909                   06/873,876                   09/22/87
4,694,915                   06/849,449                   09/22/87
4,694,917                   06/846,585                   09/22/87
4,694,923                   06/920,244                   09/22/87
4,694,930                   06/846,813                   09/22/87
4,694,935                   06/920,213                   09/22/87
4,694,963                   06/883,445                   09/22/87
4,694,972                   06/826,313                   09/22/87
4,694,983                   06/844,174                   09/22/87
4,694,992                   06/748,065                   09/22/87
4,694,993                   06/782,288                   09/22/87
4,694,997                   06/808,324                   09/22/87
4,694,999                   06/798,025                   09/22/87
4,695,008                   06/765,499                   09/22/87
4,695,033                   06/814,197                   09/22/87
4,695,041                   06/796,247                   09/22/87
4,695,043                   06/923,635                   09/22/87
4,695,048                   06/824,153                   09/22/87
4,695,051                   06/751,751                   09/22/87
4,695,056                   06/779,165                   09/22/87
4,695,059                   06/645,125                   09/22/87
4,695,062                   06/890,002                   09/22/87
4,695,066                   06/808,891                   09/22/87
4,695,068                   06/822,000                   09/22/87
4,695,074                   06/747,651                   09/22/87
4,695,075                   06/787,909                   09/22/87
4,695,079                   06/792,953                   09/22/87
4,695,083                   06/837,737                   09/22/87
4,695,089                   06/829,925                   09/22/87
4,695,092                   06/915,408                   09/22/87
4,695,093                   06/872,279                   09/22/87
4,695,097                   06/909,120                   09/22/87
4,695,109                   06/902,240                   09/22/87
4,695,110                   06/789,592                   09/22/87
4,695,112                   06/947,303                   09/22/87
4,695,116                   06/870,284                   09/22/87
4,695,117                   06/946,672                   09/22/87
4,695,119                   06/460,549                   09/22/87
4,695,124                   06/696,508                   09/22/87
4,695,127                   06/716,579                   09/22/87
4,695,129                   06/611,061                   09/22/87
4,695,132                   06/394,148                   09/22/87
4,695,135                   06/786,775                   09/22/87
4,695,136                   06/707,615                   09/22/87
4,695,138                   06/934,948                   09/22/87
4,695,147                   06/916,593                   09/22/87
4,695,150                   06/909,462                   09/22/87
4,695,151                   06/788,724                   09/22/87
4,695,152                   06/798,370                   09/22/87
4,695,153                   06/823,865                   09/22/87
4,695,154                   06/811,872                   09/22/87
4,695,155                   06/824,083                   09/22/87
4,695,160                   06/339,357                   09/22/87
4,695,167                   06/786,858                   09/22/87
4,695,174                   06/822,874                   09/22/87
4,695,185                   06/708,601                   09/22/87
4,695,189                   06/853,804                   09/22/87
4,695,209                   06/888,973                   09/22/87
4,695,210                   06/821,233                   09/22/87
4,695,226                   06/697,705                   09/22/87
4,695,231                   06/787,492                   09/22/87
4,695,237                   06/752,525                   09/22/87
4,695,239                   06/833,897                   09/22/87
4,695,246                   06/645,667                   09/22/87
4,695,247                   06/833,268                   09/22/87
4,695,248                   06/783,861                   09/22/87
4,695,249                   06/783,859                   09/22/87
4,695,252                   06/804,635                   09/22/87
4,695,263                   06/887,104                   09/22/87
4,695,264                   06/879,570                   09/22/87
4,695,273                   06/849,408                   09/22/87
4,695,277                   06/766,420                   09/22/87
4,695,283                   06/749,880                   09/22/87
4,695,289                   06/794,935                   09/22/87
4,695,292                   06/522,548                   09/22/87
4,695,301                   06/827,718                   09/22/87
4,695,302                   06/923,908                   09/22/87
4,695,306                   06/828,089                   09/22/87
4,695,312                   06/846,051                   09/22/87
4,695,315                   06/630,593                   09/22/87
4,695,325                   06/849,770                   09/22/87
4,695,335                   06/796,565                   09/22/87
4,695,340                   06/869,550                   09/22/87
4,695,341                   06/869,551                   09/22/87
4,695,346                   06/796,644                   09/22/87
4,695,350                   06/822,604                   09/22/87
4,695,352                   06/688,061                   09/22/87
4,695,355                   06/862,818                   09/22/87
4,695,356                   06/841,446                   09/22/87
4,695,357                   06/801,258                   09/22/87
4,695,359                   06/815,697                   09/22/87
4,695,371                   06/634,751                   09/22/87
4,695,378                   06/669,155                   09/22/87
4,695,379                   06/822,238                   09/22/87
4,695,386                   06/735,762                   09/22/87
4,695,387                   06/731,281                   09/22/87
4,695,399                   06/913,453                   09/22/87
4,695,411                   06/830,169                   09/22/87
4,695,417                   06/443,472                   09/22/87
4,695,427                   06/927,790                   09/22/87
4,695,429                   06/714,190                   09/22/87
4,695,432                   06/845,465                   09/22/87
4,695,433                   06/812,049                   09/22/87
4,695,434                   06/412,080                   09/22/87
4,695,435                   06/765,152                   09/22/87
4,695,436                   06/691,958                   09/22/87
4,695,440                   06/790,741                   09/22/87
4,695,445                   06/895,464                   09/22/87
4,695,447                   06/809,976                   09/22/87
4,695,456                   06/666,677                   09/22/87
4,695,458                   06/826,337                   09/22/87
4,695,468                   06/782,577                   09/22/87
4,695,476                   06/742,153                   09/22/87
4,695,478                   06/872,579                   09/22/87
4,695,486                   06/495,300                   09/22/87
4,695,487                   06/875,214                   09/22/87
4,695,497                   07/000,263                   09/22/87
4,695,508                   06/773,278                   09/22/87
4,695,513                   06/929,364                   09/22/87
4,695,515                   06/759,210                   09/22/87
4,695,516                   06/825,263                   09/22/87
4,695,520                   06/911,615                   09/22/87
4,695,524                   06/865,327                   09/22/87
4,695,534                   06/947,452                   09/22/87
4,695,535                   06/947,455                   09/22/87
4,695,543                   06/602,275                   09/22/87
4,695,550                   06/617,596                   09/22/87
4,695,564                   06/831,605                   09/22/87
4,695,569                   06/660,608                   09/22/87
4,695,575                   06/747,754                   09/22/87
4,695,579                   06/684,872                   09/22/87
4,695,580                   06/683,430                   09/22/87
4,695,581                   06/770,773                   09/22/87
4,695,585                   06/910,583                   09/22/87
4,695,586                   06/910,597                   09/22/87
4,695,592                   07/000,070                   09/22/87
4,695,599                   06/783,804                   09/22/87
4,695,600                   06/875,130                   09/22/87
4,695,601                   06/929,445                   09/22/87
4,695,602                   06/707,121                   09/22/87
4,695,608                   06/867,519                   09/22/87
4,695,609                   06/790,136                   09/22/87
4,695,618                   06/867,337                   09/22/87
4,695,626                   06/891,493                   09/22/87
4,695,627                   06/653,866                   09/22/87
4,695,634                   06/893,743                   09/22/87
4,695,636                   06/826,155                   09/22/87
4,695,639                   06/568,921                   09/22/87
4,695,651                   06/774,484                   09/22/87
4,695,658                   06/589,257                   09/22/87
4,695,670                   06/847,242                   09/22/87
4,695,675                   06/919,490                   09/22/87
4,695,682                   06/812,426                   09/22/87
4,695,695                   06/719,654                   09/22/87
4,695,700                   06/663,903                   09/22/87
4,695,703                   06/855,925                   09/22/87
4,695,710                   06/856,287                   09/22/87
4,695,711                   06/912,968                   09/22/87
4,695,713                   06/543,443                   09/22/87
4,695,715                   06/808,209                   09/22/87
4,695,721                   06/813,360                   09/22/87
4,695,723                   06/744,079                   09/22/87
4,695,727                   06/837,608                   09/22/87
4,695,733                   06/661,938                   09/22/87
4,695,736                   06/799,045                   09/22/87
4,695,746                   06/763,588                   09/22/87
4,695,748                   06/900,442                   09/22/87
4,695,767                   06/789,638                   09/22/87
4,695,770                   06/709,014                   09/22/87
4,695,774                   06/873,229                   09/22/87
4,695,779                   06/864,717                   09/22/87
4,695,780                   06/885,577                   09/22/87
4,695,781                   06/911,382                   09/22/87
4,695,784                   06/904,785                   09/22/87
4,695,796                   06/670,142                   09/22/87
4,695,800                   06/742,161                   09/22/87
4,695,808                   06/584,269                   09/22/87
4,695,809                   06/867,349                   09/22/87
4,695,811                   06/890,044                   09/22/87
4,695,814                   06/870,326                   09/22/87
4,695,823                   06/604,934                   09/22/87
4,695,829                   06/690,034                   09/22/87
4,695,830                   06/788,903                   09/22/87
4,695,834                   06/701,612                   09/22/87
4,695,838                   06/729,013                   09/22/87
4,695,840                   06/771,966                   09/22/87
4,695,841                   06/821,502                   09/22/87
4,695,843                   06/614,769                   09/22/87
4,695,844                   06/770,951                   09/22/87
4,695,847                   06/831,346                   09/22/87
4,695,856                   06/642,258                   09/22/87
4,695,862                   06/778,537                   09/22/87
4,695,865                   06/719,950                   09/22/87
4,695,872                   06/892,224                   09/22/87
4,695,880                   06/760,491                   09/22/87
4,695,905                   06/735,348                   09/22/87
4,695,917                   06/805,072                   09/22/87
4,695,931                   06/867,929                   09/22/87
4,695,940                   06/835,988                   09/22/87
4,695,947                   06/577,497                   09/22/87
4,695,948                   06/706,734                   09/22/87
4,695,954                   06/663,916                   09/22/87
4,695,967                   06/708,583                   09/22/87
4,695,979                   06/773,492                   09/22/87
4,695,984                   06/685,522                   09/22/87
4,695,985                   06/840,748                   09/22/87
4,695,987                   06/689,521                   09/22/87
4,695,989                   06/912,662                   09/22/87
4,695,993                   06/743,314                   09/22/87
4,695,995                   06/769,644                   09/22/87
4,695,997                   06/744,704                   09/22/87
4,695,999                   06/903,862                   09/22/87
4,696,005                   06/740,592                   09/22/87
4,696,016                   06/914,688                   09/22/87
4,696,017                   06/825,478                   09/22/87
4,696,020                   06/909,027                   09/22/87
4,696,021                   06/884,865                   09/22/87
4,696,042                   06/548,597                   09/22/87
4,696,047                   06/707,116                   09/22/87
4,696,055                   06/809,694                   09/22/87
4,696,058                   06/678,161                   09/22/87
4,696,059                   06/586,777                   09/22/87
4,696,060                   06/783,570                   09/22/87

                  PATENTS WHICH EXPIRED ON September 17, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,048,121                   07/507,251                   09/17/91
5,048,123                   07/590,457                   09/17/91
5,048,127                   07/610,746                   09/17/91
5,048,135                   07/644,452                   09/17/91
5,048,139                   07/552,705                   09/17/91
5,048,144                   07/586,565                   09/17/91
5,048,148                   07/356,276                   09/17/91
5,048,150                   07/471,558                   09/17/91
5,048,152                   07/468,001                   09/17/91
5,048,157                   07/377,541                   09/17/91
5,048,160                   07/506,099                   09/17/91
5,048,163                   07/347,423                   09/17/91
5,048,177                   07/610,579                   09/17/91
5,048,178                   07/602,554                   09/17/91
5,048,183                   07/609,033                   09/17/91
5,048,197                   07/311,773                   09/17/91
5,048,204                   07/378,341                   09/17/91
5,048,207                   07/492,961                   09/17/91
5,048,213                   07/599,301                   09/17/91
5,048,215                   07/575,438                   09/17/91
5,048,217                   07/597,862                   09/17/91
5,048,219                   07/510,955                   09/17/91
5,048,222                   07/575,669                   09/17/91
5,048,232                   07/553,293                   09/17/91
5,048,248                   07/370,133                   09/17/91
5,048,249                   07/634,013                   09/17/91
5,048,250                   07/502,854                   09/17/91
5,048,253                   07/636,753                   09/17/91
5,048,255                   07/478,926                   09/17/91
5,048,257                   07/481,438                   09/17/91
5,048,270                   07/470,807                   09/17/91
5,048,286                   07/546,229                   09/17/91
5,048,291                   07/443,377                   09/17/91
5,048,305                   07/575,224                   09/17/91
5,048,306                   07/540,352                   09/17/91
5,048,315                   07/586,572                   09/17/91
5,048,316                   07/646,901                   09/17/91
5,048,318                   07/580,967                   09/17/91
5,048,327                   07/524,581                   09/17/91
5,048,330                   07/478,578                   09/17/91
5,048,337                   07/534,427                   09/17/91
5,048,340                   07/485,178                   09/17/91
5,048,342                   07/412,653                   09/17/91
5,048,353                   07/486,989                   09/17/91
5,048,357                   07/587,058                   09/17/91
5,048,358                   07/533,026                   09/17/91
5,048,367                   07/493,831                   09/17/91
5,048,369                   07/486,547                   09/17/91
5,048,372                   07/447,128                   09/17/91
5,048,373                   07/577,104                   09/17/91
5,048,374                   07/413,765                   09/17/91
5,048,377                   07/469,445                   09/17/91
5,048,383                   07/210,029                   09/17/91
5,048,389                   07/281,949                   09/17/91
5,048,393                   07/589,021                   09/17/91
5,048,396                   07/213,518                   09/17/91
5,048,403                   07/478,261                   09/17/91
5,048,410                   07/489,912                   09/17/91
5,048,411                   07/508,253                   09/17/91
5,048,412                   07/516,348                   09/17/91
5,048,421                   07/562,774                   09/17/91
5,048,433                   07/581,303                   09/17/91
5,048,439                   07/550,832                   09/17/91
5,048,443                   07/512,314                   09/17/91
5,048,445                   07/404,221                   09/17/91
5,048,447                   07/552,490                   09/17/91
5,048,451                   07/503,519                   09/17/91
5,048,454                   07/469,482                   09/17/91
5,048,458                   07/369,483                   09/17/91
5,048,466                   07/613,414                   09/17/91
5,048,476                   07/596,012                   09/17/91
5,048,479                   07/563,093                   09/17/91
5,048,489                   07/507,453                   09/17/91
5,048,490                   07/537,630                   09/17/91
5,048,491                   07/574,683                   09/17/91
5,048,499                   07/502,265                   09/17/91
5,048,500                   07/570,662                   09/17/91
5,048,502                   07/578,429                   09/17/91
5,048,504                   07/493,639                   09/17/91
5,048,505                   07/669,660                   09/17/91
5,048,511                   07/588,090                   09/17/91
5,048,514                   07/547,180                   09/17/91
5,048,526                   07/234,043                   09/17/91
5,048,529                   07/384,809                   09/17/91
5,048,530                   07/505,974                   09/17/91
5,048,531                   07/417,794                   09/17/91
5,048,535                   07/536,829                   09/17/91
5,048,538                   07/521,259                   09/17/91
5,048,542                   07/516,195                   09/17/91
5,048,548                   07/480,606                   09/17/91
5,048,550                   07/547,259                   09/17/91
5,048,558                   07/647,283                   09/17/91
5,048,559                   07/574,725                   09/17/91
5,048,572                   07/108,849                   09/17/91
5,048,577                   07/447,399                   09/17/91
5,048,580                   07/550,293                   09/17/91
5,048,581                   07/518,185                   09/17/91
5,048,583                   07/446,884                   09/17/91
5,048,603                   07/529,811                   09/17/91
5,048,607                   07/565,596                   09/17/91
5,048,616                   07/488,213                   09/17/91
5,048,621                   07/566,190                   09/17/91
5,048,622                   07/540,693                   09/17/91
5,048,625                   07/469,459                   09/17/91
5,048,629                   07/547,354                   09/17/91
5,048,633                   07/464,810                   09/17/91
5,048,635                   07/589,534                   09/17/91
5,048,640                   07/596,231                   09/17/91
5,048,643                   07/511,310                   09/17/91
5,048,644                   07/266,608                   09/17/91
5,048,645                   07/532,002                   09/17/91
5,048,650                   07/381,073                   09/17/91
5,048,652                   07/440,824                   09/17/91
5,048,653                   07/556,614                   09/17/91
5,048,656                   07/574,841                   09/17/91
5,048,676                   07/567,500                   09/17/91
5,048,679                   07/533,882                   09/17/91
5,048,680                   07/589,014                   09/17/91
5,048,682                   07/527,860                   09/17/91
5,048,688                   07/643,324                   09/17/91
5,048,689                   07/597,232                   09/17/91
5,048,690                   07/400,411                   09/17/91
5,048,695                   07/652,301                   09/17/91
5,048,699                   07/410,883                   09/17/91
5,048,705                   07/485,818                   09/17/91
5,048,709                   07/581,589                   09/17/91
5,048,722                   07/424,640                   09/17/91
5,048,723                   06/873,500                   09/17/91
5,048,727                   07/522,393                   09/17/91
5,048,731                   07/439,107                   09/17/91
5,048,733                   07/371,841                   09/17/91
5,048,734                   07/461,420                   09/17/91
5,048,739                   07/615,854                   09/17/91
5,048,749                   07/409,528                   09/17/91
5,048,752                   07/242,376                   09/17/91
5,048,754                   07/479,826                   09/17/91
5,048,755                   07/509,550                   09/17/91
5,048,760                   07/610,726                   09/17/91
5,048,764                   07/554,249                   09/17/91
5,048,768                   07/498,890                   09/17/91
5,048,770                   07/529,287                   09/17/91
5,048,772                   07/643,899                   09/17/91
5,048,773                   07/534,995                   09/17/91
5,048,775                   07/539,128                   09/17/91
5,048,777                   07/471,921                   09/17/91
5,048,779                   07/594,639                   09/17/91
5,048,782                   07/600,905                   09/17/91
5,048,784                   07/514,820                   09/17/91
5,048,793                   07/537,621                   09/17/91
5,048,794                   07/549,263                   09/17/91
5,048,803                   07/442,159                   09/17/91
5,048,818                   07/574,354                   09/17/91
5,048,820                   07/495,795                   09/17/91
5,048,821                   07/617,149                   09/17/91
5,048,823                   07/572,693                   09/17/91
5,048,825                   07/582,108                   09/17/91
5,048,830                   07/585,761                   09/17/91
5,048,832                   07/656,584                   09/17/91
5,048,834                   07/529,943                   09/17/91
5,048,835                   07/529,957                   09/17/91
5,048,850                   07/583,475                   09/17/91
5,048,854                   07/568,182                   09/17/91
5,048,855                   07/507,880                   09/17/91
5,048,859                   07/530,781                   09/17/91
5,048,862                   07/539,447                   09/17/91
5,048,864                   07/513,073                   09/17/91
5,048,877                   07/504,208                   09/17/91
5,048,880                   07/535,519                   09/17/91
5,048,881                   07/526,717                   09/17/91
5,048,884                   07/501,031                   09/17/91
5,048,887                   07/584,573                   09/17/91
5,048,891                   07/429,075                   09/17/91
5,048,896                   07/184,045                   09/17/91
5,048,897                   07/459,197                   09/17/91
5,048,898                   07/549,979                   09/17/91
5,048,900                   07/351,424                   09/17/91
5,048,910                   07/535,817                   09/17/91
5,048,911                   07/369,621                   09/17/91
5,048,916                   06/415,123                   09/17/91
5,048,925                   07/193,134                   09/17/91
5,048,931                   07/380,699                   09/17/91
5,048,940                   07/470,365                   09/17/91
5,048,950                   07/523,125                   09/17/91
5,048,955                   07/415,076                   09/17/91
5,048,960                   07/361,406                   09/17/91
5,048,964                   07/469,480                   09/17/91
5,048,966                   06/498,575                   09/17/91
5,048,973                   07/531,433                   09/17/91
5,048,975                   07/551,484                   09/17/91
5,048,976                   07/349,665                   09/17/91
5,048,977                   07/013,627                   09/17/91
5,048,978                   07/640,786                   09/17/91
5,048,980                   07/617,283                   09/17/91
5,048,982                   07/596,090                   09/17/91
5,048,991                   07/547,148                   09/17/91
5,048,996                   07/547,612                   09/17/91
5,049,000                   07/137,372                   09/17/91
5,049,004                   07/467,583                   09/17/91
5,049,012                   07/667,346                   09/17/91
5,049,020                   07/517,567                   09/17/91
5,049,021                   07/343,613                   09/17/91
5,049,024                   07/496,641                   09/17/91
5,049,027                   07/483,138                   09/17/91
5,049,033                   07/482,139                   09/17/91
5,049,034                   07/433,747                   09/17/91
5,049,042                   07/574,723                   09/17/91
5,049,050                   07/482,151                   09/17/91
5,049,053                   07/394,573                   09/17/91
5,049,055                   07/512,430                   09/17/91
5,049,057                   07/519,522                   09/17/91
5,049,061                   07/527,365                   09/17/91
5,049,063                   07/456,478                   09/17/91
5,049,076                   07/481,583                   09/17/91
5,049,082                   07/494,164                   09/17/91
5,049,084                   07/446,085                   09/17/91
5,049,090                   07/475,142                   09/17/91
5,049,093                   07/422,266                   09/17/91
5,049,098                   07/523,321                   09/17/91
5,049,103                   07/650,300                   09/17/91
5,049,105                   07/492,644                   09/17/91
5,049,125                   07/302,233                   09/17/91
5,049,136                   07/462,788                   09/17/91
5,049,137                   07/404,666                   09/17/91
5,049,155                   07/568,625                   09/17/91
5,049,157                   07/084,168                   09/17/91
5,049,161                   07/360,577                   09/17/91
5,049,166                   07/485,955                   09/17/91
5,049,168                   07/604,329                   09/17/91
5,049,169                   07/526,431                   09/17/91
5,049,177                   07/452,508                   09/17/91
5,049,181                   07/440,007                   09/17/91
5,049,185                   07/469,403                   09/17/91
5,049,186                   07/494,303                   09/17/91
5,049,187                   07/498,782                   09/17/91
5,049,190                   07/426,319                   09/17/91
5,049,197                   07/478,004                   09/17/91
5,049,198                   07/206,018                   09/17/91
5,049,199                   07/530,829                   09/17/91
5,049,201                   07/370,355                   09/17/91
5,049,203                   07/515,409                   09/17/91
5,049,210                   07/480,599                   09/17/91
5,049,213                   06/791,548                   09/17/91
5,049,214                   07/671,600                   09/17/91
5,049,229                   07/456,511                   09/17/91
5,049,230                   07/489,365                   09/17/91
5,049,233                   07/549,396                   09/17/91
5,049,236                   07/235,316                   09/17/91
5,049,240                   07/476,185                   09/17/91
5,049,242                   07/632,519                   09/17/91
5,049,243                   07/632,998                   09/17/91
5,049,251                   07/362,712                   09/17/91
5,049,258                   07/440,504                   09/17/91
5,049,259                   07/301,695                   09/17/91
5,049,264                   07/406,786                   09/17/91
5,049,266                   07/466,288                   09/17/91
5,049,272                   07/427,437                   09/17/91
5,049,279                   07/348,074                   09/17/91
5,049,281                   07/624,434                   09/17/91
5,049,283                   07/483,048                   09/17/91
5,049,304                   07/454,101                   09/17/91
5,049,311                   07/626,382                   09/17/91
5,049,315                   07/535,135                   09/17/91
5,049,317                   07/550,905                   09/17/91
5,049,324                   07/387,076                   09/17/91
5,049,325                   07/470,162                   09/17/91
5,049,332                   07/547,668                   09/17/91
5,049,351                   07/375,233                   09/17/91
5,049,357                   07/427,129                   09/17/91
5,049,359                   07/489,870                   09/17/91
5,049,362                   07/454,743                   09/17/91
5,049,363                   07/389,088                   09/17/91
5,049,364                   07/518,560                   09/17/91
5,049,365                   07/486,861                   09/17/91
5,049,366                   07/468,307                   09/17/91
5,049,367                   07/417,104                   09/17/91
5,049,371                   07/263,883                   09/17/91
5,049,378                   07/342,990                   09/17/91
5,049,380                   07/346,104                   09/17/91
5,049,383                   07/458,966                   09/17/91
5,049,397                   07/291,079                   09/17/91
5,049,406                   07/378,555                   09/17/91
5,049,410                   07/430,599                   09/17/91
5,049,412                   07/496,042                   09/17/91
5,049,420                   07/483,827                   09/17/91
5,049,434                   06/658,017                   09/17/91
5,049,435                   07/415,959                   09/17/91
5,049,437                   07/396,692                   09/17/91
5,049,441                   07/467,446                   09/17/91
5,049,442                   07/468,624                   09/17/91
5,049,445                   07/285,969                   09/17/91
5,049,454                   07/368,747                   09/17/91
5,049,457                   07/473,767                   09/17/91
5,049,459                   07/495,275                   09/17/91
5,049,462                   07/481,299                   09/17/91
5,049,483                   07/532,946                   09/17/91
5,049,486                   07/337,868                   09/17/91
5,049,496                   07/632,887                   09/17/91
5,049,498                   07/632,888                   09/17/91
5,049,502                   07/140,263                   09/17/91
5,049,508                   07/260,872                   09/17/91
5,049,509                   07/121,425                   09/17/91
5,049,511                   07/515,780                   09/17/91
5,049,513                   07/583,418                   09/17/91
5,049,518                   07/450,515                   09/17/91
5,049,519                   07/426,258                   09/17/91
5,049,526                   07/362,644                   09/17/91
5,049,539                   07/305,675                   09/17/91
5,049,546                   07/495,653                   09/17/91
5,049,550                   07/274,294                   09/17/91
5,049,555                   07/286,153                   09/17/91
5,049,556                   07/389,286                   09/17/91
5,049,561                   07/455,321                   09/17/91
5,049,562                   07/396,184                   09/17/91
5,049,564                   07/438,825                   09/17/91
5,049,569                   07/325,848                   09/17/91
5,049,575                   07/431,668                   09/17/91
5,049,581                   07/399,714                   09/17/91
5,049,583                   07/311,780                   09/17/91
5,049,584                   07/609,609                   09/17/91
5,049,589                   07/452,436                   09/17/91
5,049,599                   07/469,396                   09/17/91
5,049,608                   07/346,772                   09/17/91
5,049,611                   07/422,211                   09/17/91
5,049,619                   07/337,893                   09/17/91
5,049,631                   07/432,089                   09/17/91
5,049,633                   07/417,409                   09/17/91
5,049,635                   07/467,385                   09/17/91
5,049,639                   07/314,126                   09/17/91
5,049,648                   07/245,151                   09/17/91
5,049,649                   07/462,276                   09/17/91
5,049,654                   07/128,950                   09/17/91
5,049,656                   07/288,009                   09/17/91
5,049,665                   07/414,389                   09/17/91
5,049,670                   07/482,829                   09/17/91
5,049,674                   07/454,048                   09/17/91
5,049,677                   07/356,979                   09/17/91
5,049,684                   06/414,650                   09/17/91
5,049,685                   07/434,808                   09/17/91
5,049,686                   07/406,646                   09/17/91
5,049,689                   07/468,513                   09/17/91
5,049,694                   07/407,355                   09/17/91
5,049,699                   07/468,171                   09/17/91
5,049,711                   07/273,749                   09/17/91
5,049,717                   07/611,678                   09/17/91
5,049,718                   07/558,127                   09/17/91
5,049,730                   07/513,734                   09/17/91
5,049,738                   07/484,787                   09/17/91
5,049,745                   07/566,591                   09/17/91
5,049,755                   07/543,810                   09/17/91
5,049,756                   07/421,122                   09/17/91
5,049,766                   07/493,593                   09/17/91
5,049,771                   07/541,382                   09/17/91
5,049,783                   07/604,811                   09/17/91
5,049,788                   07/516,727                   09/17/91
5,049,796                   07/353,411                   09/17/91
5,049,801                   07/491,168                   09/17/91
5,049,802                   07/487,001                   09/17/91
5,049,809                   07/180,120                   09/17/91
5,049,811                   07/546,635                   09/17/91
5,049,816                   07/532,284                   09/17/91
5,049,817                   07/535,522                   09/17/91
5,049,818                   07/489,423                   09/17/91
5,049,836                   07/447,454                   09/17/91
5,049,837                   07/542,560                   09/17/91
5,049,838                   07/409,458                   09/17/91
5,049,840                   07/458,328                   09/17/91
5,049,841                   07/551,067                   09/17/91
5,049,843                   07/508,707                   09/17/91
5,049,851                   07/465,390                   09/17/91
5,049,852                   07/465,323                   09/17/91
5,049,853                   07/431,696                   09/17/91
5,049,854                   07/645,350                   09/17/91
5,049,855                   07/425,866                   09/17/91
5,049,864                   07/420,621                   09/17/91
5,049,868                   07/409,540                   09/17/91
5,049,871                   07/524,682                   09/17/91
5,049,881                   07/539,880                   09/17/91
5,049,888                   06/562,186                   09/17/91
5,049,895                   06/694,411                   09/17/91
5,049,897                   07/491,029                   09/17/91
5,049,904                   07/458,885                   09/17/91
5,049,913                   07/560,922                   09/17/91
5,049,914                   07/543,923                   09/17/91
5,049,923                   07/542,268                   09/17/91
5,049,932                   07/475,888                   09/17/91
5,049,947                   07/375,180                   09/17/91
5,049,958                   07/520,152                   09/17/91
5,049,963                   07/496,024                   09/17/91
5,049,979                   07/539,632                   09/17/91
5,049,986                   07/427,680                   09/17/91
5,049,990                   07/553,333                   09/17/91
5,050,015                   07/422,457                   09/17/91
5,050,023                   07/664,543                   09/17/91
5,050,024                   07/471,391                   09/17/91
5,050,029                   07/483,449                   09/17/91
5,050,033                   07/657,074                   09/17/91
5,050,038                   07/550,849                   09/17/91
5,050,042                   07/564,099                   09/17/91
5,050,043                   07/574,798                   09/17/91
5,050,060                   07/487,380                   09/17/91
5,050,068                   07/252,791                   09/17/91
5,050,073                   07/139,814                   09/17/91
5,050,080                   07/411,553                   09/17/91
5,050,081                   07/270,189                   09/17/91
5,050,084                   07/473,032                   09/17/91
5,050,087                   07/442,601                   09/17/91
5,050,088                   07/330,327                   09/17/91
5,050,089                   07/404,796                   09/17/91
5,050,090                   07/331,621                   09/17/91
5,050,091                   07/572,325                   09/17/91
5,050,096                   07/412,696                   09/17/91
5,050,107                   07/307,197                   09/17/91
5,050,112                   07/390,852                   09/17/91
5,050,118                   07/626,314                   09/17/91
5,050,121                   07/467,965                   09/17/91
5,050,122                   07/016,656                   09/17/91
5,050,127                   07/423,947                   09/17/91
5,050,129                   07/649,178                   09/17/91
5,050,134                   07/467,632                   09/17/91
5,050,136                   07/590,717                   09/17/91
5,050,139                   07/668,486                   09/17/91
5,050,140                   07/669,096                   09/17/91
5,050,146                   07/387,910                   09/17/91
5,050,149                   07/378,937                   09/17/91
5,050,159                   07/216,211                   09/17/91
5,050,171                   07/444,159                   09/17/91
5,050,181                   07/609,937                   09/17/91
5,050,184                   07/485,250                   09/17/91
5,050,188                   07/203,710                   09/17/91
5,050,194                   07/493,730                   09/17/91
5,050,201                   07/523,874                   09/17/91
5,050,207                   07/431,524                   09/17/91
5,050,208                   07/494,752                   09/17/91
5,050,214                   07/608,359                   09/17/91
5,050,225                   07/515,372                   09/17/91
5,050,226                   07/496,478                   09/17/91
5,050,227                   07/446,888                   09/17/91
5,050,233                   07/198,436                   09/17/91

                  PATENTS WHICH EXPIRED ON September 19, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,450,625                   08/193,567                   09/19/95
5,450,633                   08/248,967                   09/19/95
5,450,634                   08/281,514                   09/19/95
5,450,635                   08/235,911                   09/19/95
5,450,636                   08/314,100                   09/19/95
5,450,638                   08/078,754                   09/19/95
5,450,644                   08/209,902                   09/19/95
5,450,646                   08/280,152                   09/19/95
5,450,647                   08/260,246                   09/19/95
5,450,648                   08/155,838                   09/19/95
5,450,649                   08/080,286                   09/19/95
5,450,654                   08/096,307                   09/19/95
5,450,667                   08/261,774                   09/19/95
5,450,673                   08/234,308                   09/19/95
5,450,679                   08/058,640                   09/19/95
5,450,680                   08/146,906                   09/19/95
5,450,683                   08/320,899                   09/19/95
5,450,684                   08/289,962                   09/19/95
5,450,688                   08/243,261                   09/19/95
5,450,691                   08/060,606                   09/19/95
5,450,700                   08/096,519                   09/19/95
5,450,702                   08/116,864                   09/19/95
5,450,706                   08/064,916                   09/19/95
5,450,717                   08/223,161                   09/19/95
5,450,718                   08/103,835                   09/19/95
5,450,728                   08/159,993                   09/19/95
5,450,730                   08/132,088                   09/19/95
5,450,731                   08/198,950                   09/19/95
5,450,736                   08/166,783                   09/19/95
5,450,742                   08/117,178                   09/19/95
5,450,743                   08/179,406                   09/19/95
5,450,745                   08/282,304                   09/19/95
5,450,754                   08/207,067                   09/19/95
5,450,758                   08/311,022                   09/19/95
5,450,759                   08/285,484                   09/19/95
5,450,760                   08/172,767                   09/19/95
5,450,765                   08/204,056                   09/19/95
5,450,768                   08/209,914                   09/19/95
5,450,778                   08/092,774                   09/19/95
5,450,779                   08/306,952                   09/19/95
5,450,785                   08/373,766                   09/19/95
5,450,788                   08/287,405                   09/19/95
5,450,791                   08/177,457                   09/19/95
5,450,795                   08/214,420                   09/19/95
5,450,800                   08/213,608                   09/19/95
5,450,802                   08/157,372                   09/19/95
5,450,807                   08/304,334                   09/19/95
5,450,808                   08/293,556                   09/19/95
5,450,809                   08/106,273                   09/19/95
5,450,811                   08/136,916                   09/19/95
5,450,823                   08/078,163                   09/19/95
5,450,824                   08/185,152                   09/19/95
5,450,827                   08/358,002                   09/19/95
5,450,838                   08/075,237                   09/19/95
5,450,856                   08/232,639                   09/19/95
5,450,858                   08/175,667                   09/19/95
5,450,865                   08/243,086                   09/19/95
5,450,866                   08/229,763                   09/19/95
5,450,877                   08/243,920                   09/19/95
5,450,882                   08/293,581                   09/19/95
5,450,888                   08/137,478                   09/19/95
5,450,896                   08/186,674                   09/19/95
5,450,898                   08/243,513                   09/19/95
5,450,899                   08/108,699                   09/19/95
5,450,906                   08/222,265                   09/19/95
5,450,909                   08/165,637                   09/19/95
5,450,910                   08/167,169                   09/19/95
5,450,917                   08/287,551                   09/19/95
5,450,918                   08/171,029                   09/19/95
5,450,920                   08/212,958                   09/19/95
5,450,921                   08/054,273                   09/19/95
5,450,923                   08/057,865                   09/19/95
5,450,927                   08/337,087                   09/19/95
5,450,940                   08/237,587                   09/19/95
5,450,941                   08/264,957                   09/19/95
5,450,943                   08/046,972                   09/19/95
5,450,944                   08/107,746                   09/19/95
5,450,947                   08/311,882                   09/19/95
5,450,948                   08/227,644                   09/19/95
5,450,950                   08/222,665                   09/19/95
5,450,953                   08/047,868                   09/19/95
5,450,954                   08/162,264                   09/19/95
5,450,955                   08/164,282                   09/19/95
5,450,957                   08/339,791                   09/19/95
5,450,963                   08/199,642                   09/19/95
5,450,970                   08/249,334                   09/19/95
5,450,975                   08/339,294                   09/19/95
5,450,976                   08/100,102                   09/19/95
5,450,979                   08/049,841                   09/19/95
5,450,980                   08/138,685                   09/19/95
5,450,982                   08/197,487                   09/19/95
5,450,985                   08/231,328                   09/19/95
5,450,992                   08/259,065                   09/19/95
5,450,993                   08/192,519                   09/19/95
5,450,994                   08/308,136                   09/19/95
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