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 29, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,696,067                   06/912,668                   09/29/87
4,696,077                   06/868,099                   09/29/87
4,696,079                   06/857,199                   09/29/87
4,696,080                   06/814,722                   09/29/87
4,696,084                   06/833,180                   09/29/87
4,696,088                   06/919,973                   09/29/87
4,696,093                   06/872,147                   09/29/87
4,696,101                   06/908,920                   09/29/87
4,696,104                   06/895,633                   09/29/87
4,696,132                   06/907,573                   09/29/87
4,696,135                   06/843,720                   09/29/87
4,696,136                   06/895,452                   09/29/87
4,696,137                   06/823,598                   09/29/87
4,696,138                   06/688,876                   09/29/87
4,696,151                   06/783,133                   09/29/87
4,696,170                   06/761,766                   09/29/87
4,696,176                   06/824,582                   09/29/87
4,696,184                   06/790,932                   09/29/87
4,696,186                   06/899,484                   09/29/87
4,696,192                   06/882,535                   09/29/87
4,696,199                   06/812,022                   09/29/87
4,696,203                   06/648,532                   09/29/87
4,696,204                   06/857,636                   09/29/87
4,696,212                   06/874,964                   09/29/87
4,696,216                   06/739,852                   09/29/87
4,696,223                   06/274,956                   09/29/87
4,696,224                   06/682,420                   09/29/87
4,696,225                   06/871,790                   09/29/87
4,696,226                   06/901,380                   09/29/87
4,696,237                   06/828,415                   09/29/87
4,696,238                   06/792,215                   09/29/87
4,696,244                   06/944,875                   09/29/87
4,696,245                   06/765,875                   09/29/87
4,696,257                   06/896,680                   09/29/87
4,696,260                   06/758,257                   09/29/87
4,696,261                   06/894,090                   09/29/87
4,696,263                   06/911,485                   09/29/87
4,696,264                   06/764,220                   09/29/87
4,696,266                   06/879,645                   09/29/87
4,696,267                   06/790,508                   09/29/87
4,696,277                   06/926,175                   09/29/87
4,696,297                   06/726,096                   09/29/87
4,696,302                   06/764,106                   09/29/87
4,696,306                   06/932,528                   09/29/87
4,696,309                   06/691,570                   09/29/87
4,696,317                   06/795,666                   09/29/87
4,696,324                   06/914,379                   09/29/87
4,696,334                   06/830,268                   09/29/87
4,696,343                   06/866,589                   09/29/87
4,696,345                   06/898,549                   09/29/87
4,696,352                   06/840,309                   09/29/87
4,696,355                   06/816,577                   09/29/87
4,696,357                   06/867,148                   09/29/87
4,696,368                   06/839,637                   09/29/87
4,696,370                   06/801,994                   09/29/87
4,696,380                   06/792,299                   09/29/87
4,696,381                   06/780,834                   09/29/87
4,696,385                   06/617,334                   09/29/87
4,696,387                   06/854,284                   09/29/87
4,696,397                   06/731,429                   09/29/87
4,696,407                   06/821,261                   09/29/87
4,696,413                   06/819,223                   09/29/87
4,696,421                   06/841,555                   09/29/87
4,696,437                   06/885,743                   09/29/87
4,696,443                   06/821,035                   09/29/87
4,696,444                   06/853,446                   09/29/87
4,696,458                   06/909,599                   09/29/87
4,696,459                   06/793,694                   09/29/87
4,696,460                   06/884,484                   09/29/87
4,696,467                   06/831,487                   09/29/87
4,696,468                   06/400,108                   09/29/87
4,696,471                   06/860,629                   09/29/87
4,696,472                   06/929,729                   09/29/87
4,696,474                   06/814,601                   09/29/87
4,696,476                   06/861,153                   09/29/87
4,696,490                   06/881,641                   09/29/87
4,696,496                   06/789,152                   09/29/87
4,696,501                   06/824,049                   09/29/87
4,696,502                   06/767,039                   09/29/87
4,696,507                   06/892,948                   09/29/87
4,696,515                   06/832,829                   09/29/87
4,696,523                   06/907,872                   09/29/87
4,696,525                   06/809,091                   09/29/87
4,696,527                   06/864,136                   09/29/87
4,696,532                   06/677,155                   09/29/87
4,696,538                   06/733,318                   09/29/87
4,696,539                   06/633,704                   09/29/87
4,696,545                   06/765,748                   09/29/87
4,696,548                   06/742,525                   09/29/87
4,696,550                   06/814,611                   09/29/87
4,696,551                   06/778,786                   09/29/87
4,696,554                   06/750,687                   09/29/87
4,696,557                   06/888,374                   09/29/87
4,696,563                   06/803,718                   09/29/87
4,696,564                   06/883,728                   09/29/87
4,696,566                   06/697,465                   09/29/87
4,696,569                   06/721,968                   09/29/87
4,696,578                   06/876,143                   09/29/87
4,696,584                   06/807,779                   09/29/87
4,696,590                   06/780,733                   09/29/87
4,696,592                   06/736,711                   09/29/87
4,696,601                   06/885,358                   09/29/87
4,696,604                   06/894,547                   09/29/87
4,696,605                   06/837,707                   09/29/87
4,696,608                   06/792,829                   09/29/87
4,696,612                   06/777,714                   09/29/87
4,696,615                   06/802,109                   09/29/87
4,696,621                   06/856,986                   09/29/87
4,696,623                   06/807,148                   09/29/87
4,696,624                   07/037,388                   09/29/87
4,696,635                   06/862,165                   09/29/87
4,696,642                   06/857,963                   09/29/87
4,696,655                   06/896,645                   09/29/87
4,696,662                   06/892,905                   09/29/87
4,696,672                   06/912,173                   09/29/87
4,696,673                   06/821,735                   09/29/87
4,696,674                   06/827,373                   09/29/87
4,696,677                   06/850,467                   09/29/87
4,696,680                   06/783,606                   09/29/87
4,696,687                   06/873,398                   09/29/87
4,696,689                   06/803,675                   09/29/87
4,696,691                   06/914,226                   09/29/87
4,696,696                   06/870,373                   09/29/87
4,696,698                   06/787,505                   09/29/87
4,696,699                   06/849,048                   09/29/87
4,696,703                   06/755,247                   09/29/87
4,696,707                   06/794,172                   09/29/87
4,696,711                   06/537,867                   09/29/87
4,696,727                   06/929,721                   09/29/87
4,696,740                   06/777,599                   09/29/87
4,696,744                   06/822,819                   09/29/87
4,696,752                   06/425,386                   09/29/87
4,696,757                   06/874,739                   09/29/87
4,696,760                   06/678,247                   09/29/87
4,696,765                   06/663,593                   09/29/87
4,696,779                   06/840,263                   09/29/87
4,696,802                   06/802,138                   09/29/87
4,696,803                   06/829,347                   09/29/87
4,696,815                   06/615,892                   09/29/87
4,696,827                   06/805,268                   09/29/87
4,696,828                   06/736,750                   09/29/87
4,696,857                   06/808,807                   09/29/87
4,696,865                   06/602,318                   09/29/87
4,696,876                   06/862,022                   09/29/87
4,696,886                   06/748,064                   09/29/87
4,696,888                   06/890,537                   09/29/87
4,696,895                   06/658,560                   09/29/87
4,696,900                   06/617,743                   09/29/87
4,696,904                   06/843,423                   09/29/87
4,696,905                   06/608,996                   09/29/87
4,696,916                   06/404,743                   09/29/87
4,696,928                   06/774,218                   09/29/87
4,696,929                   06/809,876                   09/29/87
4,696,938                   06/856,629                   09/29/87
4,696,947                   06/462,964                   09/29/87
4,696,948                   06/675,596                   09/29/87
4,696,950                   06/807,812                   09/29/87
4,696,951                   06/861,964                   09/29/87
4,696,957                   06/753,067                   09/29/87
4,696,961                   06/652,631                   09/29/87
4,696,962                   06/633,807                   09/29/87
4,696,966                   06/858,043                   09/29/87
4,696,975                   06/766,679                   09/29/87
4,696,982                   06/908,539                   09/29/87
4,696,991                   06/893,822                   09/29/87
4,697,010                   06/870,822                   09/29/87
4,697,054                   06/900,995                   09/29/87
4,697,057                   06/745,669                   09/29/87
4,697,058                   06/856,514                   09/29/87
4,697,059                   06/413,595                   09/29/87
4,697,065                   06/837,272                   09/29/87
4,697,079                   06/714,868                   09/29/87
4,697,088                   06/747,997                   09/29/87
4,697,092                   06/630,935                   09/29/87
4,697,099                   06/925,018                   09/29/87
4,697,102                   06/737,872                   09/29/87
4,697,108                   06/861,166                   09/29/87
4,697,109                   06/751,864                   09/29/87
4,697,110                   06/555,618                   09/29/87
4,697,113                   06/761,164                   09/29/87
4,697,115                   06/785,938                   09/29/87
4,697,121                   06/904,398                   09/29/87
4,697,132                   06/283,636                   09/29/87
4,697,137                   06/822,126                   09/29/87
4,697,138                   06/875,817                   09/29/87
4,697,141                   06/891,012                   09/29/87
4,697,142                   06/718,466                   09/29/87
4,697,147                   06/799,848                   09/29/87
4,697,155                   06/853,799                   09/29/87
4,697,161                   06/773,688                   09/29/87
4,697,168                   06/920,830                   09/29/87
4,697,170                   06/793,203                   09/29/87
4,697,176                   06/891,698                   09/29/87
4,697,179                   06/716,228                   09/29/87
4,697,215                   06/810,634                   09/29/87
4,697,217                   06/541,809                   09/29/87
4,697,223                   07/005,612                   09/29/87
4,697,225                   06/893,895                   09/29/87
4,697,229                   06/826,282                   09/29/87
4,697,231                   06/747,661                   09/29/87
4,697,232                   06/676,707                   09/29/87
4,697,239                   06/688,890                   09/29/87
4,697,240                   06/738,604                   09/29/87
4,697,243                   06/758,984                   09/29/87
4,697,249                   06/470,482                   09/29/87
4,697,251                   06/809,551                   09/29/87
4,697,254                   06/869,644                   09/29/87
4,697,262                   06/758,990                   09/29/87
4,697,263                   06/518,476                   09/29/87
4,697,265                   06/740,326                   09/29/87

                  PATENTS WHICH EXPIRED ON September 24, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,050,244                   07/417,709                   09/24/91
5,050,253                   07/510,953                   09/24/91
5,050,256                   07/530,210                   09/24/91
5,050,261                   07/624,559                   09/24/91
5,050,263                   07/557,310                   09/24/91
5,050,265                   07/628,507                   09/24/91
5,050,270                   07/567,749                   09/24/91
5,050,276                   07/537,854                   09/24/91
5,050,277                   07/037,806                   09/24/91
5,050,278                   07/482,886                   09/24/91
5,050,287                   07/329,233                   09/24/91
5,050,289                   07/504,980                   09/24/91
5,050,291                   07/612,501                   09/24/91
5,050,296                   07/534,891                   09/24/91
5,050,299                   07/503,578                   09/24/91
5,050,306                   07/691,506                   09/24/91
5,050,308                   07/438,165                   09/24/91
5,050,312                   07/352,120                   09/24/91
5,050,313                   07/569,390                   09/24/91
5,050,315                   07/297,428                   09/24/91
5,050,322                   07/470,073                   09/24/91
5,050,333                   07/619,489                   09/24/91
5,050,340                   07/522,548                   09/24/91
5,050,346                   07/559,639                   09/24/91
5,050,347                   07/609,771                   09/24/91
5,050,352                   07/415,590                   09/24/91
5,050,354                   07/413,593                   09/24/91
5,050,358                   07/561,693                   09/24/91
5,050,368                   07/463,431                   09/24/91
5,050,371                   07/586,533                   09/24/91
5,050,377                   07/472,960                   09/24/91
5,050,378                   07/337,917                   09/24/91
5,050,381                   07/580,744                   09/24/91
5,050,388                   07/532,862                   09/24/91
5,050,390                   07/309,159                   09/24/91
5,050,391                   07/642,897                   09/24/91
5,050,398                   07/577,198                   09/24/91
5,050,411                   07/542,629                   09/24/91
5,050,424                   07/555,040                   09/24/91
5,050,425                   07/444,517                   09/24/91
5,050,426                   07/454,045                   09/24/91
5,050,431                   07/581,014                   09/24/91
5,050,435                   07/381,385                   09/24/91
5,050,436                   07/479,241                   09/24/91
5,050,444                   07/560,841                   09/24/91
5,050,448                   07/417,612                   09/24/91
5,050,450                   07/423,979                   09/24/91
5,050,459                   07/510,191                   09/24/91
5,050,473                   07/351,701                   09/24/91
5,050,478                   07/441,527                   09/24/91
5,050,491                   07/514,133                   09/24/91
5,050,492                   07/593,079                   09/24/91
5,050,496                   07/581,677                   09/24/91
5,050,497                   07/581,664                   09/24/91
5,050,501                   07/637,911                   09/24/91
5,050,504                   07/225,399                   09/24/91
5,050,515                   07/560,930                   09/24/91
5,050,516                   07/531,580                   09/24/91
5,050,528                   07/475,016                   09/24/91
5,050,532                   07/412,028                   09/24/91
5,050,533                   07/603,121                   09/24/91
5,050,537                   07/517,185                   09/24/91
5,050,538                   07/521,906                   09/24/91
5,050,552                   07/559,349                   09/24/91
5,050,555                   07/511,149                   09/24/91
5,050,566                   07/554,896                   09/24/91
5,050,567                   07/649,714                   09/24/91
5,050,569                   07/455,487                   09/24/91
5,050,570                   07/333,326                   09/24/91
5,050,572                   07/472,557                   09/24/91
5,050,573                   07/477,993                   09/24/91
5,050,577                   07/526,373                   09/24/91
5,050,582                   07/556,747                   09/24/91
5,050,591                   07/518,542                   09/24/91
5,050,592                   07/519,657                   09/24/91
5,050,613                   07/408,060                   09/24/91
5,050,617                   07/481,839                   09/24/91
5,050,619                   07/457,698                   09/24/91
5,050,624                   07/636,698                   09/24/91
5,050,625                   07/598,534                   09/24/91
5,050,628                   07/464,859                   09/24/91
5,050,629                   07/616,345                   09/24/91
5,050,632                   07/625,849                   09/24/91
5,050,641                   07/520,790                   09/24/91
5,050,654                   07/554,174                   09/24/91
5,050,659                   07/515,967                   09/24/91
5,050,667                   07/523,612                   09/24/91
5,050,690                   07/510,480                   09/24/91
5,050,692                   07/285,081                   09/24/91
5,050,697                   07/591,519                   09/24/91
5,050,703                   07/417,329                   09/24/91
5,050,714                   07/449,267                   09/24/91
5,050,721                   07/580,742                   09/24/91
5,050,727                   07/419,036                   09/24/91
5,050,743                   07/569,218                   09/24/91
5,050,744                   07/462,748                   09/24/91
5,050,748                   07/575,327                   09/24/91
5,050,749                   07/589,415                   09/24/91
5,050,751                   07/508,121                   09/24/91
5,050,753                   07/572,249                   09/24/91
5,050,755                   07/501,950                   09/24/91
5,050,759                   07/596,358                   09/24/91
5,050,761                   07/528,513                   09/24/91
5,050,764                   07/490,219                   09/24/91
5,050,770                   07/392,600                   09/24/91
5,050,774                   07/534,468                   09/24/91
5,050,778                   07/608,479                   09/24/91
5,050,781                   07/463,610                   09/24/91
5,050,786                   07/498,422                   09/24/91
5,050,787                   07/502,574                   09/24/91
5,050,789                   07/591,644                   09/24/91
5,050,802                   07/435,712                   09/24/91
5,050,803                   07/420,413                   09/24/91
5,050,805                   07/506,556                   09/24/91
5,050,816                   07/494,154                   09/24/91
5,050,820                   07/312,984                   09/24/91
5,050,827                   07/545,889                   09/24/91
5,050,832                   07/524,807                   09/24/91
5,050,834                   07/505,580                   09/24/91
5,050,841                   07/545,370                   09/24/91
5,050,843                   07/567,738                   09/24/91
5,050,854                   07/509,101                   09/24/91
5,050,857                   07/454,687                   09/24/91
5,050,859                   07/539,655                   09/24/91
5,050,864                   07/467,494                   09/24/91
5,050,875                   07/525,256                   09/24/91
5,050,876                   07/641,959                   09/24/91
5,050,878                   07/418,540                   09/24/91
5,050,879                   07/514,142                   09/24/91
5,050,884                   07/629,900                   09/24/91
5,050,886                   07/591,041                   09/24/91
5,050,887                   07/622,978                   09/24/91
5,050,895                   07/333,342                   09/24/91
5,050,898                   07/508,797                   09/24/91
5,050,902                   07/475,001                   09/24/91
5,050,903                   07/382,793                   09/24/91
5,050,906                   07/553,580                   09/24/91
5,050,910                   07/379,932                   09/24/91
5,050,926                   07/641,297                   09/24/91
5,050,940                   07/475,064                   09/24/91
5,050,951                   07/520,350                   09/24/91
5,050,958                   07/486,068                   09/24/91
5,050,975                   07/620,541                   09/24/91
5,050,977                   07/507,914                   09/24/91
5,050,978                   07/547,211                   09/24/91
5,050,986                   07/533,308                   09/24/91
5,050,987                   07/402,866                   09/24/91
5,050,989                   07/410,388                   09/24/91
5,050,991                   07/415,740                   09/24/91
5,050,993                   07/365,990                   09/24/91
5,050,995                   07/431,338                   09/24/91
5,050,996                   07/557,374                   09/24/91
5,051,008                   07/498,173                   09/24/91
5,051,012                   07/370,638                   09/24/91
5,051,021                   07/597,484                   09/24/91
5,051,027                   07/451,089                   09/24/91
5,051,043                   07/442,233                   09/24/91
5,051,046                   07/450,417                   09/24/91
5,051,047                   07/500,016                   09/24/91
5,051,050                   07/481,857                   09/24/91
5,051,052                   07/515,111                   09/24/91
5,051,056                   07/463,131                   09/24/91
5,051,059                   07/421,350                   09/24/91
5,051,063                   07/528,648                   09/24/91
5,051,064                   07/460,664                   09/24/91
5,051,068                   07/567,963                   09/24/91
5,051,070                   07/459,378                   09/24/91
5,051,074                   07/479,338                   09/24/91
5,051,076                   07/427,478                   09/24/91
5,051,080                   07/551,658                   09/24/91
5,051,081                   07/487,278                   09/24/91
5,051,090                   07/506,185                   09/24/91
5,051,096                   07/425,525                   09/24/91
5,051,106                   07/548,244                   09/24/91
5,051,107                   07/532,927                   09/24/91
5,051,109                   07/552,934                   09/24/91
5,051,111                   07/275,231                   09/24/91
5,051,116                   07/548,936                   09/24/91
5,051,133                   07/448,297                   09/24/91
5,051,146                   07/587,888                   09/24/91
5,051,151                   07/656,918                   09/24/91
5,051,153                   07/702,970                   09/24/91
5,051,154                   07/471,381                   09/24/91
5,051,166                   07/426,904                   09/24/91
5,051,172                   07/431,690                   09/24/91
5,051,173                   07/504,566                   09/24/91
5,051,174                   07/412,118                   09/24/91
5,051,176                   07/587,942                   09/24/91
5,051,177                   07/513,908                   09/24/91
5,051,180                   07/347,098                   09/24/91
5,051,184                   07/573,790                   09/24/91
5,051,187                   07/570,488                   09/24/91
5,051,191                   07/607,026                   09/24/91
5,051,197                   07/595,104                   09/24/91
5,051,199                   07/410,051                   09/24/91
5,051,200                   07/409,539                   09/24/91
5,051,201                   07/580,861                   09/24/91
5,051,204                   07/446,548                   09/24/91
5,051,205                   07/510,648                   09/24/91
5,051,209                   07/515,401                   09/24/91
5,051,211                   07/327,993                   09/24/91
5,051,213                   07/039,871                   09/24/91
5,051,220                   07/094,678                   09/24/91
5,051,221                   07/482,482                   09/24/91
5,051,223                   07/405,560                   09/24/91
5,051,231                   07/582,337                   09/24/91
5,051,232                   07/465,830                   09/24/91
5,051,235                   07/463,832                   09/24/91
5,051,244                   07/556,149                   09/24/91
5,051,246                   07/523,677                   09/24/91
5,051,247                   07/576,908                   09/24/91
5,051,256                   07/443,878                   09/24/91
5,051,261                   07/499,400                   09/24/91
5,051,267                   07/391,512                   09/24/91
5,051,276                   07/381,734                   09/24/91
5,051,295                   07/360,935                   09/24/91
5,051,297                   07/340,831                   09/24/91
5,051,302                   07/559,447                   09/24/91
5,051,304                   07/135,037                   09/24/91
5,051,306                   07/527,111                   09/24/91
5,051,317                   07/460,359                   09/24/91
5,051,321                   07/557,527                   09/24/91
5,051,324                   07/504,792                   09/24/91
5,051,330                   07/450,960                   09/24/91
5,051,337                   07/517,537                   09/24/91
5,051,339                   07/330,563                   09/24/91
5,051,343                   07/366,953                   09/24/91
5,051,345                   07/478,709                   09/24/91
5,051,358                   07/047,239                   09/24/91
5,051,359                   07/201,993                   09/24/91
5,051,360                   07/513,864                   09/24/91
5,051,362                   07/322,724                   09/24/91
5,051,365                   07/043,219                   09/24/91
5,051,366                   07/591,159                   09/24/91
5,051,375                   07/377,276                   09/24/91
5,051,377                   07/400,300                   09/24/91
5,051,383                   07/327,296                   09/24/91
5,051,384                   07/497,170                   09/24/91
5,051,386                   07/516,266                   09/24/91
5,051,390                   07/419,580                   09/24/91
5,051,393                   07/399,523                   09/24/91
5,051,394                   07/484,238                   09/24/91
5,051,399                   07/250,120                   09/24/91
5,051,406                   07/620,394                   09/24/91
5,051,409                   07/430,585                   09/24/91
5,051,411                   07/367,968                   09/24/91
5,051,413                   07/452,995                   09/24/91
5,051,414                   07/389,030                   09/24/91
5,051,421                   07/467,088                   09/24/91
5,051,422                   07/408,020                   09/24/91
5,051,425                   07/215,953                   09/24/91
5,051,431                   07/565,297                   09/24/91
5,051,438                   07/524,765                   09/24/91
5,051,441                   07/417,199                   09/24/91
5,051,453                   07/304,200                   09/24/91
5,051,470                   07/104,062                   09/24/91
5,051,480                   07/421,431                   09/24/91
5,051,485                   07/452,200                   09/24/91
5,051,490                   07/588,504                   09/24/91
5,051,499                   07/445,965                   09/24/91
5,051,501                   07/431,969                   09/24/91
5,051,502                   07/534,073                   09/24/91
5,051,503                   07/516,377                   09/24/91
5,051,504                   07/521,382                   09/24/91
5,051,505                   07/561,811                   09/24/91
5,051,508                   07/540,394                   09/24/91
5,051,517                   07/520,338                   09/24/91
5,051,523                   07/296,561                   09/24/91
5,051,527                   07/316,831                   09/24/91
5,051,530                   07/465,765                   09/24/91
5,051,531                   07/200,340                   09/24/91
5,051,538                   07/438,209                   09/24/91
5,051,542                   07/291,514                   09/24/91
5,051,545                   07/505,944                   09/24/91
5,051,548                   07/580,484                   09/24/91
5,051,553                   07/490,608                   09/24/91
5,051,563                   07/331,661                   09/24/91
5,051,569                   07/359,370                   09/24/91
5,051,572                   07/505,578                   09/24/91
5,051,580                   07/557,412                   09/24/91
5,051,590                   07/447,494                   09/24/91
5,051,591                   07/639,401                   09/24/91
5,051,593                   07/616,626                   09/24/91
5,051,595                   07/446,953                   09/24/91
5,051,599                   07/470,857                   09/24/91
5,051,604                   07/350,268                   09/24/91
5,051,605                   07/299,970                   09/24/91
5,051,612                   07/309,514                   09/24/91
5,051,626                   07/610,461                   09/24/91
5,051,628                   07/459,843                   09/24/91
5,051,633                   07/390,989                   09/24/91
5,051,640                   07/516,063                   09/24/91
5,051,642                   07/567,790                   09/24/91
5,051,649                   07/405,209                   09/24/91
5,051,652                   07/445,026                   09/24/91
5,051,654                   07/544,761                   09/24/91
5,051,655                   07/007,618                   09/24/91
5,051,657                   07/538,562                   09/24/91
5,051,659                   07/647,903                   09/24/91
5,051,661                   07/516,764                   09/24/91
5,051,678                   07/490,780                   09/24/91
5,051,683                   07/543,426                   09/24/91
5,051,692                   07/389,439                   09/24/91
5,051,694                   07/463,154                   09/24/91
5,051,703                   07/538,124                   09/24/91
5,051,705                   07/551,426                   09/24/91
5,051,710                   07/543,505                   09/24/91
5,051,713                   07/292,091                   09/24/91
5,051,718                   07/584,175                   09/24/91
5,051,721                   07/405,644                   09/24/91
5,051,728                   07/484,895                   09/24/91
5,051,729                   07/158,850                   09/24/91
5,051,732                   07/239,198                   09/24/91
5,051,742                   07/490,478                   09/24/91
5,051,744                   07/475,846                   09/24/91
5,051,746                   07/497,285                   09/24/91
5,051,753                   07/423,892                   09/24/91
5,051,763                   07/602,115                   09/24/91
5,051,774                   07/590,332                   09/24/91
5,051,775                   07/612,077                   09/24/91
5,051,783                   07/557,380                   09/24/91
5,051,785                   07/369,763                   09/24/91
5,051,787                   07/525,546                   09/24/91
5,051,788                   07/576,873                   09/24/91
5,051,789                   07/595,528                   09/24/91
5,051,790                   07/455,194                   09/24/91
5,051,795                   07/439,766                   09/24/91
5,051,796                   07/403,065                   09/24/91
5,051,801                   07/478,265                   09/24/91
5,051,803                   07/543,108                   09/24/91
5,051,804                   07/444,339                   09/24/91
5,051,806                   07/385,378                   09/24/91
5,051,814                   07/303,049                   09/24/91
5,051,821                   07/662,386                   09/24/91
5,051,822                   07/423,946                   09/24/91
5,051,826                   07/486,433                   09/24/91
5,051,834                   07/497,029                   09/24/91
5,051,835                   07/430,557                   09/24/91
5,051,848                   07/350,841                   09/24/91
5,051,861                   07/462,386                   09/24/91
5,051,863                   07/601,945                   09/24/91
5,051,864                   07/602,105                   09/24/91
5,051,869                   07/521,783                   09/24/91
5,051,871                   06/625,478                   09/24/91
5,051,872                   07/524,684                   09/24/91
5,051,873                   07/615,355                   09/24/91
5,051,881                   07/548,479                   09/24/91
5,051,883                   07/557,908                   09/24/91
5,051,892                   07/308,292                   09/24/91
5,051,905                   07/310,564                   09/24/91
5,051,911                   07/441,944                   09/24/91
5,051,915                   07/559,390                   09/24/91
5,051,918                   07/407,985                   09/24/91
5,051,921                   07/443,527                   09/24/91
5,051,933                   07/196,502                   09/24/91
5,051,943                   07/622,078                   09/24/91
5,051,944                   06/853,259                   09/24/91
5,051,964                   07/570,602                   09/24/91
5,051,969                   07/442,867                   09/24/91
5,051,972                   07/212,551                   09/24/91
5,051,976                   07/190,853                   09/24/91
5,051,977                   07/400,840                   09/24/91
5,051,988                   07/429,302                   09/24/91
5,051,996                   07/328,917                   09/24/91
5,052,002                   07/569,601                   09/24/91
5,052,011                   07/641,821                   09/24/91
5,052,012                   07/580,031                   09/24/91
5,052,013                   07/511,287                   09/24/91
5,052,022                   07/378,281                   09/24/91
5,052,032                   07/552,986                   09/24/91
5,052,037                   07/371,040                   09/24/91
5,052,038                   07/508,961                   09/24/91
5,052,041                   07/485,563                   09/24/91
5,052,047                   07/507,345                   09/24/91

                  PATENTS WHICH EXPIRED ON September 26, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,452,479                   08/210,430                   09/26/95
5,452,483                   08/093,648                   09/26/95
5,452,485                   08/284,146                   09/26/95
5,452,487                   08/276,463                   09/26/95
5,452,488                   08/027,089                   09/26/95
5,452,490                   08/369,878                   09/26/95
5,452,493                   08/234,297                   09/26/95
5,452,497                   08/159,466                   09/26/95
5,452,504                   08/241,617                   09/26/95
5,452,511                   08/147,838                   09/26/95
5,452,514                   08/191,652                   09/26/95
5,452,516                   08/186,698                   09/26/95
5,452,522                   08/289,726                   09/26/95
5,452,532                   08/126,524                   09/26/95
5,452,536                   08/296,503                   09/26/95
5,452,537                   08/218,242                   09/26/95
5,452,538                   08/170,760                   09/26/95
5,452,541                   08/286,389                   09/26/95
5,452,545                   08/109,940                   09/26/95
5,452,551                   08/177,598                   09/26/95
5,452,553                   08/119,549                   09/26/95
5,452,563                   08/268,887                   09/26/95
5,452,570                   08/114,154                   09/26/95
5,452,584                   08/274,992                   09/26/95
5,452,585                   08/262,680                   09/26/95
5,452,588                   08/213,015                   09/26/95
5,452,590                   08/157,127                   09/26/95
5,452,597                   08/290,557                   09/26/95
5,452,602                   08/211,477                   09/26/95
5,452,616                   08/359,965                   09/26/95
5,452,618                   08/311,077                   09/26/95
5,452,623                   08/220,846                   09/26/95
5,452,626                   08/204,638                   09/26/95
5,452,629                   08/231,128                   09/26/95
5,452,630                   08/236,392                   09/26/95
5,452,638                   08/270,762                   09/26/95
5,452,653                   08/303,741                   09/26/95
5,452,656                   08/238,284                   09/26/95
5,452,660                   08/271,018                   09/26/95
5,452,664                   08/188,524                   09/26/95
5,452,670                   08/136,678                   09/26/95
5,452,674                   08/167,904                   09/26/95
5,452,679                   08/188,389                   09/26/95
5,452,681                   08/304,894                   09/26/95
5,452,683                   08/227,105                   09/26/95
5,452,698                   08/331,363                   09/26/95
5,452,704                   08/251,307                   09/26/95
5,452,705                   08/358,013                   09/26/95
5,452,709                   08/292,469                   09/26/95
5,452,718                   08/159,798                   09/26/95
5,452,728                   08/263,516                   09/26/95
5,452,730                   08/329,282                   09/26/95
5,452,731                   08/329,650                   09/26/95
5,452,734                   08/376,937                   09/26/95
5,452,740                   08/280,366                   09/26/95
5,452,750                   08/160,942                   09/26/95
5,452,755                   08/226,234                   09/26/95
5,452,766                   08/138,672                   09/26/95
5,452,769                   08/130,742                   09/26/95
5,452,776                   08/285,868                   09/26/95
5,452,777                   08/172,955                   09/26/95
5,452,789                   08/204,289                   09/26/95
5,452,790                   08/258,801                   09/26/95
5,452,791                   08/276,631                   09/26/95
5,452,792                   08/280,938                   09/26/95
5,452,798                   08/061,382                   09/26/95
5,452,803                   08/171,812                   09/26/95
5,452,806                   08/210,930                   09/26/95
5,452,808                   08/223,967                   09/26/95
5,452,813                   08/185,705                   09/26/95
5,452,819                   08/055,273                   09/26/95
5,452,820                   08/265,911                   09/26/95
5,452,830                   08/294,487                   09/26/95
5,452,839                   08/262,173                   09/26/95
5,452,845                   08/394,590                   09/26/95
5,452,849                   08/003,449                   09/26/95
5,452,857                   08/066,668                   09/26/95
5,452,861                   08/284,864                   09/26/95
5,452,871                   08/207,594                   09/26/95
5,452,875                   08/230,965                   09/26/95
5,452,877                   08/309,401                   09/26/95
5,452,888                   08/345,575                   09/26/95
5,452,891                   08/242,445                   09/26/95
5,452,893                   08/188,897                   09/26/95
5,452,894                   08/255,657                   09/26/95
5,452,895                   08/296,446                   09/26/95
5,452,901                   08/267,372                   09/26/95
5,452,909                   08/342,895                   09/26/95
5,452,915                   08/302,163                   09/26/95
5,452,925                   08/269,791                   09/26/95
5,452,935                   08/120,052                   09/26/95
5,452,943                   08/185,932                   09/26/95
5,452,945                   08/134,660                   09/26/95
5,452,946                   08/228,420                   09/26/95
5,452,954                   08/073,904                   09/26/95
5,452,969                   08/189,805                   09/26/95
5,452,972                   08/311,052                   09/26/95
5,452,973                   08/349,515                   09/26/95
5,452,975                   08/093,997                   09/26/95
5,452,977                   08/253,943                   09/26/95
5,452,978                   08/153,151                   09/26/95
5,452,983                   08/199,759                   09/26/95
5,452,988                   08/234,754                   09/26/95
5,452,997                   08/181,381                   09/26/95
5,453,001                   08/273,988                   09/26/95
5,453,006                   08/147,502                   09/26/95
5,453,007                   08/278,916                   09/26/95
5,453,010                   08/212,623                   09/26/95
5,453,025                   08/201,261                   09/26/95
5,453,029                   08/298,871                   09/26/95
5,453,030                   08/278,228                   09/26/95
5,453,031                   08/277,334                   09/26/95
5,453,032                   08/365,888                   09/26/95
5,453,033                   08/320,274                   09/26/95
5,453,037                   08/009,637                   09/26/95
5,453,039                   08/173,070                   09/26/95
5,453,041                   08/164,956                   09/26/95
5,453,042                   08/334,237                   09/26/95
5,453,043                   08/222,229                   09/26/95
5,453,055                   08/293,158                   09/26/95
5,453,066                   08/393,671                   09/26/95
5,453,067                   08/192,583                   09/26/95
5,453,074                   08/170,340                   09/26/95
5,453,078                   08/205,799                   09/26/95
5,453,079                   08/260,011                   09/26/95
5,453,084                   08/063,867                   09/26/95
5,453,092                   08/270,763                   09/26/95
5,453,096                   08/097,633                   09/26/95
5,453,108                   08/246,223                   09/26/95
5,453,118                   08/287,465                   09/26/95
5,453,119                   08/221,933                   09/26/95
5,453,125                   08/331,916                   09/26/95
5,453,126                   08/323,165                   09/26/95
5,453,144                   08/206,316                   09/26/95
5,453,147                   08/368,156                   09/26/95
5,453,152                   08/238,699                   09/26/95
5,453,153                   07/849,632                   09/26/95
5,453,161                   08/151,216                   09/26/95
5,453,162                   08/119,033                   09/26/95
5,453,164                   08/240,043                   09/26/95
5,453,174                   08/179,579                   09/26/95
5,453,179                   08/055,154                   09/26/95
5,453,182                   08/216,309                   09/26/95
5,453,200                   08/066,102                   09/26/95
5,453,201                   08/181,844                   09/26/95
5,453,205                   08/150,138                   09/26/95
5,453,206                   08/142,457                   09/26/95
5,453,211                   08/155,407                   09/26/95
5,453,214                   08/211,533                   09/26/95
5,453,215                   08/169,841                   09/26/95
5,453,225                   08/218,400                   09/26/95
5,453,230                   08/161,884                   09/26/95
5,453,236                   08/192,999                   09/26/95
5,453,241                   08/124,543                   09/26/95
5,453,243                   08/291,793                   09/26/95
5,453,245                   08/057,202                   09/26/95
5,453,250                   08/122,269                   09/26/95
5,453,253                   07/602,017                   09/26/95
5,453,254                   08/142,834                   09/26/95
5,453,266                   08/175,421                   09/26/95
5,453,268                   08/181,189                   09/26/95
5,453,270                   08/025,623                   09/26/95
5,453,271                   08/082,422                   09/26/95
5,453,274                   08/316,225                   09/26/95
5,453,276                   08/147,913                   09/26/95
5,453,279                   07/871,933                   09/26/95
5,453,285                   08/087,737                   09/26/95
5,453,288                   08/103,560                   09/26/95
5,453,292                   07/609,704                   09/26/95
5,453,295                   07/821,414                   09/26/95
5,453,298                   08/221,873                   09/26/95
5,453,303                   08/278,931                   09/26/95
5,453,308                   08/357,599                   09/26/95
5,453,327                   08/327,575                   09/26/95
5,453,351                   08/296,656                   09/26/95
5,453,364                   08/102,702                   09/26/95
5,453,365                   08/342,002                   09/26/95
5,453,375                   08/108,345                   09/26/95
5,453,376                   08/181,921                   09/26/95
5,453,377                   08/263,039                   09/26/95
5,453,382                   07/992,232                   09/26/95
5,453,399                   08/132,597                   09/26/95
5,453,401                   07/694,155                   09/26/95
5,453,408                   08/257,030                   09/26/95
5,453,420                   08/109,315                   09/26/95
5,453,423                   08/119,202                   09/26/95
5,453,424                   08/156,343                   09/26/95
5,453,430                   08/037,972                   09/26/95
5,453,437                   08/118,376                   09/26/95
5,453,444                   08/319,081                   09/26/95
5,453,453                   08/223,775                   09/26/95
5,453,461                   08/131,368                   09/26/95
5,453,467                   08/199,285                   09/26/95
5,453,478                   08/028,494                   09/26/95
5,453,485                   08/172,050                   09/26/95
5,453,492                   08/098,647                   09/26/95
5,453,495                   08/361,485                   09/26/95
5,453,501                   08/222,355                   09/26/95
5,453,502                   08/213,644                   09/26/95
5,453,504                   08/309,840                   09/26/95
5,453,514                   08/178,395                   09/26/95
5,453,515                   08/173,476                   09/26/95
5,453,518                   08/045,420                   09/26/95
5,453,524                   08/199,231                   09/26/95
5,453,528                   08/343,322                   09/26/95
5,453,543                   08/320,347                   09/26/95
5,453,551                   08/197,985                   09/26/95
5,453,561                   08/187,673                   09/26/95
5,453,562                   08/135,248                   09/26/95
5,453,567                   08/178,735                   09/26/95
5,453,582                   08/396,867                   09/26/95
5,453,596                   08/251,599                   09/26/95
5,453,610                   08/247,063                   09/26/95
5,453,614                   08/250,421                   09/26/95
5,453,638                   08/102,146                   09/26/95
5,453,666                   08/283,110                   09/26/95
5,453,669                   08/251,347                   09/26/95
5,453,674                   08/244,428                   09/26/95
5,453,683                   08/141,222                   09/26/95
5,453,690                   08/110,029                   09/26/95
5,453,691                   08/110,030                   09/26/95
5,453,695                   08/040,529                   09/26/95
5,453,711                   08/147,311                   09/26/95
5,453,725                   08/249,132                   09/26/95
5,453,728                   07/962,792                   09/26/95
5,453,729                   08/098,021                   09/26/95
5,453,732                   08/251,936                   09/26/95
5,453,740                   08/216,343                   09/26/95
5,453,741                   08/120,532                   09/26/95
5,453,742                   08/137,486                   09/26/95
5,453,745                   08/155,812                   09/26/95
5,453,748                   08/152,800                   09/26/95
5,453,759                   08/364,421                   09/26/95
5,453,768                   08/143,658                   09/26/95
5,453,783                   07/940,261                   09/26/95
5,453,792                   08/210,812                   09/26/95
5,453,823                   08/246,288                   09/26/95
5,453,834                   08/225,802                   09/26/95
5,453,837                   08/289,420                   09/26/95
5,453,847                   08/298,086                   09/26/95
5,453,855                   08/164,373                   09/26/95
5,453,871                   07/366,007                   09/26/95
5,453,873                   08/309,136                   09/26/95
5,453,874                   08/090,075                   09/26/95
5,453,882                   07/945,012                   09/26/95
5,453,897                   08/231,502                   09/26/95
5,453,909                   08/318,478                   09/26/95
5,453,916                   08/169,619                   09/26/95
5,453,918                   08/183,667                   09/26/95
5,453,928                   08/225,310                   09/26/95
5,453,936                   07/954,029                   09/26/95
5,453,989                   08/302,242                   09/26/95
5,453,994                   08/091,261                   09/26/95
5,454,015                   08/283,727                   09/26/95
5,454,025                   07/975,243                   09/26/95
5,454,030                   08/385,738                   09/26/95
5,454,037                   08/144,250                   09/26/95
5,454,059                   08/136,875                   09/26/95
5,454,063                   08/158,297                   09/26/95
5,454,077                   07/679,935                   09/26/95
5,454,084                   08/077,951                   09/26/95
5,454,088                   08/062,183                   09/26/95
5,454,092                   08/151,719                   09/26/95