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 November 24, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                        Issue
Number                        Number                           Date

4,707,870                   06/839,142                   11/24/1987
4,707,874                   06/839,064                   11/24/1987
4,707,875                   06/763,264                   11/24/1987
4,707,880                   06/836,127                   11/24/1987
4,707,881                   06/867,187                   11/24/1987
4,707,887                   06/783,446                   11/24/1987
4,707,902                   06/943,251                   11/24/1987
4,707,913                   06/902,631                   11/24/1987
4,707,915                   06/943,475                   11/24/1987
4,707,918                   06/834,593                   11/24/1987
4,707,921                   06/892,297                   11/24/1987
4,707,924                   06/872,958                   11/24/1987
4,707,929                   07/058,767                   11/24/1987
4,707,930                   06/928,296                   11/24/1987
4,707,946                   06/858,795                   11/24/1987
4,707,948                   06/299,086                   11/24/1987
4,707,959                   06/832,596                   11/24/1987
4,707,982                   06/277,520                   11/24/1987
4,707,987                   06/785,759                   11/24/1987
4,707,995                   06/738,544                   11/24/1987
4,707,997                   06/823,173                   11/24/1987
4,707,998                   06/939,701                   11/24/1987
4,708,000                   07/025,478                   11/24/1987
4,708,003                   06/866,880                   11/24/1987
4,708,010                   06/918,053                   11/24/1987
4,708,021                   06/825,077                   11/24/1987
4,708,025                   06/815,803                   11/24/1987
4,708,031                   07/000,063                   11/24/1987
4,708,037                   06/943,987                   11/24/1987
4,708,051                   06/897,516                   11/24/1987
4,708,052                   06/897,496                   11/24/1987
4,708,062                   06/843,320                   11/24/1987
4,708,063                   06/878,503                   11/24/1987
4,708,068                   06/897,969                   11/24/1987
4,708,072                   06/875,281                   11/24/1987
4,708,077                   06/849,275                   11/24/1987
4,708,079                   06/647,549                   11/24/1987
4,708,089                   06/873,650                   11/24/1987
4,708,091                   06/740,722                   11/24/1987
4,708,104                   07/022,550                   11/24/1987
4,708,106                   06/882,781                   11/24/1987
4,708,111                   06/777,683                   11/24/1987
4,708,114                   06/800,629                   11/24/1987
4,708,117                   06/851,567                   11/24/1987
4,708,120                   06/840,040                   11/24/1987
4,708,131                   06/899,729                   11/24/1987
4,708,141                   06/843,257                   11/24/1987
4,708,146                   06/893,834                   11/24/1987
4,708,162                   06/849,470                   11/24/1987
4,708,163                   07/007,749                   11/24/1987
4,708,164                   06/874,921                   11/24/1987
4,708,177                   06/746,686                   11/24/1987
4,708,181                   06/866,624                   11/24/1987
4,708,183                   07/045,154                   11/24/1987
4,708,185                   06/917,285                   11/24/1987
4,708,187                   06/720,095                   11/24/1987
4,708,188                   06/710,763                   11/24/1987
4,708,200                   06/868,653                   11/24/1987
4,708,203                   06/868,409                   11/24/1987
4,708,204                   06/912,698                   11/24/1987
4,708,212                   06/836,084                   11/24/1987
4,708,214                   06/899,266                   11/24/1987
4,708,223                   06/912,855                   11/24/1987
4,708,231                   06/843,701                   11/24/1987
4,708,242                   07/010,292                   11/24/1987
4,708,246                   06/891,775                   11/24/1987
4,708,250                   06/515,269                   11/24/1987
4,708,269                   06/882,361                   11/24/1987
4,708,273                   06/896,308                   11/24/1987
4,708,280                   06/904,812                   11/24/1987
4,708,295                   06/721,326                   11/24/1987
4,708,299                   06/887,274                   11/24/1987
4,708,303                   06/819,143                   11/24/1987
4,708,319                   06/874,493                   11/24/1987
4,708,337                   06/813,655                   11/24/1987
4,708,340                   06/360,442                   11/24/1987
4,708,347                   06/854,626                   11/24/1987
4,708,349                   06/792,362                   11/24/1987
4,708,354                   06/927,571                   11/24/1987
4,708,361                   06/833,810                   11/24/1987
4,708,362                   07/040,728                   11/24/1987
4,708,365                   06/862,255                   11/24/1987
4,708,372                   06/709,207                   11/24/1987
4,708,374                   06/635,715                   11/24/1987
4,708,379                   06/893,397                   11/24/1987
4,708,383                   06/879,744                   11/24/1987
4,708,392                   06/881,225                   11/24/1987
4,708,394                   06/868,017                   11/24/1987
4,708,407                   06/948,400                   11/24/1987
4,708,417                   06/911,158                   11/24/1987
4,708,424                   06/652,721                   11/24/1987
4,708,426                   06/751,416                   11/24/1987
4,708,434                   06/739,258                   11/24/1987
4,708,435                   06/925,723                   11/24/1987
4,708,436                   06/754,134                   11/24/1987
4,708,440                   06/829,821                   11/24/1987
4,708,450                   06/916,176                   11/24/1987
4,708,478                   06/926,822                   11/24/1987
4,708,486                   06/861,346                   11/24/1987
4,708,492                   06/844,443                   11/24/1987
4,708,500                   06/818,413                   11/24/1987
4,708,511                   06/889,447                   11/24/1987
4,708,513                   06/773,031                   11/24/1987
4,708,518                   06/888,175                   11/24/1987
4,708,530                   06/918,702                   11/24/1987
4,708,544                   06/867,914                   11/24/1987
4,708,546                   06/946,230                   11/24/1987
4,708,551                   06/689,664                   11/24/1987
4,708,557                   06/860,798                   11/24/1987
4,708,561                   06/782,683                   11/24/1987
4,708,566                   06/859,947                   11/24/1987
4,708,581                   07/004,205                   11/24/1987
4,708,582                   06/910,520                   11/24/1987
4,708,586                   06/896,470                   11/24/1987
4,708,590                   06/820,691                   11/24/1987
4,708,591                   06/818,938                   11/24/1987
4,708,602                   07/027,079                   11/24/1987
4,708,603                   06/873,955                   11/24/1987
4,708,605                   06/870,127                   11/24/1987
4,708,606                   07/039,975                   11/24/1987
4,708,607                   06/942,916                   11/24/1987
4,708,622                   06/852,338                   11/24/1987
4,708,624                   06/862,470                   11/24/1987
4,708,626                   06/837,449                   11/24/1987
4,708,630                   06/864,366                   11/24/1987
4,708,634                   06/879,466                   11/24/1987
4,708,636                   06/786,188                   11/24/1987
4,708,638                   06/832,456                   11/24/1987
4,708,644                   06/883,420                   11/24/1987
4,708,694                   06/879,641                   11/24/1987
4,708,708                   06/880,614                   11/24/1987
4,708,710                   06/844,959                   11/24/1987
4,708,719                   06/669,352                   11/24/1987
4,708,748                   06/881,915                   11/24/1987
4,708,749                   06/802,218                   11/24/1987
4,708,755                   06/458,253                   11/24/1987
4,708,756                   06/904,508                   11/24/1987
4,708,766                   06/928,341                   11/24/1987
4,708,781                   06/921,158                   11/24/1987
4,708,792                   06/854,413                   11/24/1987
4,708,796                   06/781,138                   11/24/1987
4,708,800                   06/782,523                   11/24/1987
4,708,805                   06/934,604                   11/24/1987
4,708,810                   06/671,923                   11/24/1987
4,708,811                   07/019,867                   11/24/1987
4,708,813                   06/914,395                   11/24/1987
4,708,822                   06/772,694                   11/24/1987
4,708,826                   06/708,714                   11/24/1987
4,708,827                   06/840,230                   11/24/1987
4,708,829                   06/740,063                   11/24/1987
4,708,833                   06/862,797                   11/24/1987
4,708,852                   06/720,912                   11/24/1987
4,708,856                   06/899,706                   11/24/1987
4,708,857                   06/910,305                   11/24/1987
4,708,867                   06/587,536                   11/24/1987
4,708,872                   06/812,699                   11/24/1987
4,708,874                   06/838,248                   11/24/1987
4,708,875                   06/361,930                   11/24/1987
4,708,880                   06/891,722                   11/24/1987
4,708,882                   06/810,988                   11/24/1987
4,708,883                   06/821,139                   11/24/1987
4,708,892                   06/923,590                   11/24/1987
4,708,898                   06/841,627                   11/24/1987
4,708,915                   06/821,681                   11/24/1987
4,708,920                   07/019,026                   11/24/1987
4,708,925                   06/883,175                   11/24/1987
4,708,940                   06/473,867                   11/24/1987
4,708,944                   06/749,713                   11/24/1987
4,708,946                   06/865,882                   11/24/1987
4,708,951                   06/715,658                   11/24/1987
4,708,958                   06/911,927                   11/24/1987
4,708,963                   06/738,545                   11/24/1987
4,708,965                   06/776,580                   11/24/1987
4,708,975                   06/847,190                   11/24/1987
4,708,999                   06/894,419                   11/24/1987
4,709,000                   06/894,714                   11/24/1987
4,709,002                   06/871,003                   11/24/1987
4,709,005                   06/818,290                   11/24/1987
4,709,007                   06/922,837                   11/24/1987
4,709,009                   06/740,456                   11/24/1987
4,709,022                   06/746,386                   11/24/1987
4,709,029                   06/821,618                   11/24/1987
4,709,040                   06/899,198                   11/24/1987
4,709,053                   06/773,706                   11/24/1987
4,709,062                   06/823,410                   11/24/1987
4,709,064                   06/887,296                   11/24/1987
4,709,073                   06/744,951                   11/24/1987
4,709,074                   06/901,247                   11/24/1987
4,709,079                   06/820,488                   11/24/1987
4,709,080                   06/918,834                   11/24/1987
4,709,091                   06/716,792                   11/24/1987
4,709,124                   06/778,128                   11/24/1987
4,709,127                   06/922,682                   11/24/1987
4,709,133                   06/847,441                   11/24/1987
4,709,141                   06/817,307                   11/24/1987
4,709,154                   06/767,305                   11/24/1987
4,709,160                   06/900,213                   11/24/1987
4,709,163                   06/469,544                   11/24/1987
4,709,166                   06/865,700                   11/24/1987
4,709,169                   06/902,711                   11/24/1987
4,709,172                   06/766,954                   11/24/1987
4,709,174                   06/732,416                   11/24/1987
4,709,175                   06/732,415                   11/24/1987
4,709,194                   06/886,605                   11/24/1987
4,709,197                   06/883,352                   11/24/1987
4,709,203                   06/783,427                   11/24/1987
4,709,208                   06/810,775                   11/24/1987
4,709,211                   06/884,504                   11/24/1987
4,709,218                   06/885,930                   11/24/1987
4,709,226                   06/755,011                   11/24/1987
4,709,227                   06/847,636                   11/24/1987
4,709,229                   06/833,893                   11/24/1987
4,709,238                   06/604,678                   11/24/1987
4,709,240                   06/730,521                   11/24/1987
4,709,251                   06/768,486                   11/24/1987
4,709,253                   06/859,126                   11/24/1987
4,709,256                   06/838,755                   11/24/1987
4,709,280                   06/782,801                   11/24/1987
4,709,286                   06/829,074                   11/24/1987
4,709,289                   06/883,783                   11/24/1987
4,709,291                   06/772,953                   11/24/1987
4,709,308                   06/879,956                   11/24/1987
4,709,310                   06/861,411                   11/24/1987
4,709,311                   06/887,372                   11/24/1987
4,709,314                   06/874,662                   11/24/1987
4,709,315                   06/934,516                   11/24/1987
4,709,322                   06/759,147                   11/24/1987
4,709,323                   06/913,141                   11/24/1987
4,709,326                   06/626,163                   11/24/1987
4,709,333                   06/816,013                   11/24/1987
4,709,334                   06/781,053                   11/24/1987
4,709,337                   06/826,647                   11/24/1987
4,709,339                   06/859,497                   11/24/1987
4,709,345                   06/719,915                   11/24/1987
4,709,348                   06/873,753                   11/24/1987
4,709,354                   06/788,228                   11/24/1987
4,709,356                   06/800,848                   11/24/1987
4,709,365                   06/755,328                   11/24/1987
4,709,367                   06/846,340                   11/24/1987
4,709,378                   06/725,464                   11/24/1987
4,709,380                   06/816,956                   11/24/1987
4,709,382                   06/673,779                   11/24/1987
4,709,383                   06/868,744                   11/24/1987
4,709,385                   06/824,105                   11/24/1987
4,709,395                   06/631,772                   11/24/1987
4,709,399                   06/928,718                   11/24/1987
4,709,405                   06/810,846                   11/24/1987

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

5,065,457                   07/591,128                   11/19/1991
5,065,469                   07/420,171                   11/19/1991
5,065,474                   07/543,134                   11/19/1991
5,065,482                   07/569,623                   11/19/1991
5,065,483                   07/656,666                   11/19/1991
5,065,490                   07/531,219                   11/19/1991
5,065,491                   07/420,359                   11/19/1991
5,065,498                   07/505,675                   11/19/1991
5,065,507                   07/372,610                   11/19/1991
5,065,508                   07/423,119                   11/19/1991
5,065,511                   07/681,182                   11/19/1991
5,065,516                   07/433,019                   11/19/1991
5,065,524                   07/551,761                   11/19/1991
5,065,533                   07/636,729                   11/19/1991
5,065,537                   07/497,358                   11/19/1991
5,065,539                   07/438,628                   11/19/1991
5,065,541                   07/586,577                   11/19/1991
5,065,545                   07/671,373                   11/19/1991
5,065,548                   07/362,211                   11/19/1991
5,065,555                   07/439,087                   11/19/1991
5,065,558                   07/456,315                   11/19/1991
5,065,565                   07/419,346                   11/19/1991
5,065,567                   07/595,210                   11/19/1991
5,065,571                   07/483,713                   11/19/1991
5,065,580                   07/496,697                   11/19/1991
5,065,590                   07/582,245                   11/19/1991
5,065,596                   07/522,199                   11/19/1991
5,065,597                   07/522,172                   11/19/1991
5,065,598                   07/576,213                   11/19/1991
5,065,603                   07/656,459                   11/19/1991
5,065,611                   07/394,013                   11/19/1991
5,065,615                   07/490,173                   11/19/1991
5,065,620                   07/610,615                   11/19/1991
5,065,622                   07/575,939                   11/19/1991
5,065,623                   07/424,659                   11/19/1991
5,065,624                   07/441,903                   11/19/1991
5,065,629                   07/595,610                   11/19/1991
5,065,632                   07/458,663                   11/19/1991
5,065,633                   07/507,935                   11/19/1991
5,065,639                   07/615,222                   11/19/1991
5,065,641                   07/500,872                   11/19/1991
5,065,653                   07/571,216                   11/19/1991
5,065,654                   07/594,858                   11/19/1991
5,065,655                   07/491,672                   11/19/1991
5,065,657                   07/401,765                   11/19/1991
5,065,662                   07/633,723                   11/19/1991
5,065,664                   07/502,340                   11/19/1991
5,065,670                   07/687,975                   11/19/1991
5,065,674                   07/581,838                   11/19/1991
5,065,676                   07/178,871                   11/19/1991
5,065,687                   07/497,138                   11/19/1991
5,065,699                   07/444,520                   11/19/1991
5,065,707                   07/477,957                   11/19/1991
5,065,710                   07/558,067                   11/19/1991
5,065,711                   07/622,814                   11/19/1991
5,065,714                   07/558,373                   11/19/1991
5,065,718                   07/568,133                   11/19/1991
5,065,723                   07/066,142                   11/19/1991
5,065,733                   07/638,540                   11/19/1991
5,065,749                   07/576,696                   11/19/1991
5,065,751                   07/589,769                   11/19/1991
5,065,760                   07/592,293                   11/19/1991
5,065,761                   07/379,568                   11/19/1991
5,065,763                   07/483,574                   11/19/1991
5,065,774                   07/395,877                   11/19/1991
5,065,775                   07/484,587                   11/19/1991
5,065,778                   07/544,985                   11/19/1991
5,065,780                   07/476,368                   11/19/1991
5,065,788                   07/621,754                   11/19/1991
5,065,796                   07/591,774                   11/19/1991
5,065,802                   07/584,205                   11/19/1991
5,065,804                   07/679,826                   11/19/1991
5,065,807                   07/362,052                   11/19/1991
5,065,811                   07/630,340                   11/19/1991
5,065,815                   07/602,794                   11/19/1991
5,065,828                   07/488,679                   11/19/1991
5,065,832                   07/115,818                   11/19/1991
5,065,841                   07/577,252                   11/19/1991
5,065,843                   07/523,941                   11/19/1991
5,065,844                   07/431,110                   11/19/1991
5,065,849                   07/503,975                   11/19/1991
5,065,851                   07/556,381                   11/19/1991
5,065,854                   07/472,667                   11/19/1991
5,065,858                   07/481,019                   11/19/1991
5,065,862                   07/541,644                   11/19/1991
5,065,864                   07/630,831                   11/19/1991
5,065,865                   07/516,070                   11/19/1991
5,065,867                   07/600,404                   11/19/1991
5,065,869                   07/221,570                   11/19/1991
5,065,870                   07/628,496                   11/19/1991
5,065,876                   07/445,416                   11/19/1991
5,065,881                   07/461,316                   11/19/1991
5,065,883                   07/583,474                   11/19/1991
5,065,884                   07/456,953                   11/19/1991
5,065,888                   07/629,431                   11/19/1991
5,065,892                   07/573,492                   11/19/1991
5,065,905                   07/527,407                   11/19/1991
5,065,913                   07/503,729                   11/19/1991
5,065,918                   07/487,000                   11/19/1991
5,065,922                   07/486,118                   11/19/1991
5,065,923                   07/567,092                   11/19/1991
5,065,925                   07/487,404                   11/19/1991
5,065,930                   07/571,936                   11/19/1991
5,065,939                   07/589,959                   11/19/1991
5,065,944                   07/615,178                   11/19/1991
5,065,945                   07/503,810                   11/19/1991
5,065,951                   07/507,964                   11/19/1991
5,065,952                   07/529,285                   11/19/1991
5,065,958                   06/902,712                   11/19/1991
5,065,964                   07/618,481                   11/19/1991
5,065,965                   07/573,441                   11/19/1991
5,065,968                   07/603,224                   11/19/1991
5,065,973                   07/618,604                   11/19/1991
5,065,980                   07/539,659                   11/19/1991
5,065,987                   07/265,239                   11/19/1991
5,065,989                   07/532,917                   11/19/1991
5,065,993                   07/629,400                   11/19/1991
5,066,006                   07/651,737                   11/19/1991
5,066,015                   07/587,269                   11/19/1991
5,066,018                   07/597,038                   11/19/1991
5,066,023                   07/473,969                   11/19/1991
5,066,024                   07/581,150                   11/19/1991
5,066,027                   07/547,374                   11/19/1991
5,066,029                   07/604,608                   11/19/1991
5,066,037                   07/570,787                   11/19/1991
5,066,039                   07/339,047                   11/19/1991
5,066,044                   07/496,945                   11/19/1991
5,066,049                   07/612,765                   11/19/1991
5,066,051                   07/468,691                   11/19/1991
5,066,055                   07/609,424                   11/19/1991
5,066,063                   07/583,591                   11/19/1991
5,066,066                   07/664,668                   11/19/1991
5,066,069                   07/518,378                   11/19/1991
5,066,071                   07/572,234                   11/19/1991
5,066,072                   07/563,245                   11/19/1991
5,066,075                   07/456,367                   11/19/1991
5,066,088                   07/572,835                   11/19/1991
5,066,095                   07/652,711                   11/19/1991
5,066,100                   07/632,928                   11/19/1991
5,066,102                   07/594,630                   11/19/1991
5,066,121                   07/415,075                   11/19/1991
5,066,125                   07/436,970                   11/19/1991
5,066,134                   07/589,459                   11/19/1991
5,066,144                   07/516,977                   11/19/1991
5,066,146                   07/575,485                   11/19/1991
5,066,148                   07/560,702                   11/19/1991
5,066,150                   07/510,654                   11/19/1991
5,066,156                   07/495,864                   11/19/1991
5,066,157                   07/418,573                   11/19/1991
5,066,173                   07/472,913                   11/19/1991
5,066,175                   07/603,956                   11/19/1991
5,066,180                   07/624,372                   11/19/1991
5,066,187                   07/476,694                   11/19/1991
5,066,196                   07/379,705                   11/19/1991
5,066,202                   07/533,535                   11/19/1991
5,066,211                   07/487,486                   11/19/1991
5,066,214                   07/266,477                   11/19/1991
5,066,219                   07/500,782                   11/19/1991
5,066,221                   07/639,600                   11/19/1991
5,066,228                   07/571,182                   11/19/1991
5,066,231                   07/484,692                   11/19/1991
5,066,243                   07/513,306                   11/19/1991
5,066,250                   07/605,445                   11/19/1991
5,066,254                   07/478,444                   11/19/1991
5,066,259                   07/525,236                   11/19/1991
5,066,263                   07/608,291                   11/19/1991
5,066,265                   07/637,293                   11/19/1991
5,066,271                   07/479,711                   11/19/1991
5,066,279                   07/532,456                   11/19/1991
5,066,286                   07/610,538                   11/19/1991
5,066,287                   07/520,239                   11/19/1991
5,066,294                   07/527,140                   11/19/1991
5,066,308                   07/475,599                   11/19/1991
5,066,310                   07/566,634                   11/19/1991
5,066,324                   07/485,931                   11/19/1991
5,066,326                   07/519,509                   11/19/1991
5,066,338                   07/512,130                   11/19/1991
5,066,339                   07/514,921                   11/19/1991
5,066,344                   07/479,191                   11/19/1991
5,066,355                   07/438,290                   11/19/1991
5,066,360                   07/586,923                   11/19/1991
5,066,369                   07/460,625                   11/19/1991
5,066,370                   07/578,971                   11/19/1991
5,066,371                   07/316,201                   11/19/1991
5,066,374                   07/585,428                   11/19/1991
5,066,380                   07/529,829                   11/19/1991
5,066,389                   07/589,394                   11/19/1991
5,066,390                   07/532,963                   11/19/1991
5,066,392                   07/392,341                   11/19/1991
5,066,394                   07/560,350                   11/19/1991
5,066,401                   07/552,051                   11/19/1991
5,066,403                   07/551,342                   11/19/1991
5,066,408                   07/493,801                   11/19/1991
5,066,411                   07/499,624                   11/19/1991
5,066,412                   07/649,504                   11/19/1991
5,066,416                   07/091,181                   11/19/1991
5,066,418                   07/599,283                   11/19/1991
5,066,421                   07/281,107                   11/19/1991
5,066,431                   07/511,784                   11/19/1991
5,066,435                   07/488,131                   11/19/1991
5,066,438                   07/455,034                   11/19/1991
5,066,450                   07/386,306                   11/19/1991
5,066,454                   07/540,683                   11/19/1991
5,066,460                   07/553,021                   11/19/1991
5,066,471                   07/617,634                   11/19/1991
5,066,473                   07/579,236                   11/19/1991
5,066,474                   07/450,028                   11/19/1991
5,066,476                   07/550,105                   11/19/1991
5,066,483                   07/583,835                   11/19/1991
5,066,492                   07/528,344                   11/19/1991
5,066,496                   07/227,739                   11/19/1991
5,066,503                   07/611,563                   11/19/1991
5,066,504                   07/513,716                   11/19/1991
5,066,508                   07/465,647                   11/19/1991
5,066,512                   07/448,174                   11/19/1991
5,066,513                   07/477,400                   11/19/1991
5,066,515                   07/554,135                   11/19/1991
5,066,521                   07/546,912                   11/19/1991
5,066,529                   07/587,753                   11/19/1991
5,066,531                   07/403,121                   11/19/1991
5,066,533                   07/540,043                   11/19/1991
5,066,535                   07/560,465                   11/19/1991
5,066,541                   07/286,028                   11/19/1991
5,066,551                   07/468,761                   11/19/1991
5,066,555                   06/797,763                   11/19/1991
5,066,557                   07/459,339                   11/19/1991
5,066,565                   07/330,032                   11/19/1991
5,066,589                   07/212,254                   11/19/1991
5,066,590                   07/304,914                   11/19/1991
5,066,597                   07/335,836                   11/19/1991
5,066,601                   07/569,214                   11/19/1991
5,066,607                   07/567,989                   11/19/1991
5,066,610                   07/410,921                   11/19/1991
5,066,613                   07/380,175                   11/19/1991
5,066,617                   07/351,277                   11/19/1991
5,066,618                   07/568,618                   11/19/1991
5,066,620                   07/558,451                   11/19/1991
5,066,622                   07/554,100                   11/19/1991
5,066,623                   07/491,534                   11/19/1991
5,066,625                   07/610,883                   11/19/1991
5,066,628                   07/528,038                   11/19/1991
5,066,629                   07/545,958                   11/19/1991
5,066,642                   07/477,373                   11/19/1991
5,066,648                   07/589,221                   11/19/1991
5,066,651                   07/525,137                   11/19/1991
5,066,656                   07/580,393                   11/19/1991
5,066,661                   07/489,414                   11/19/1991
5,066,667                   07/539,755                   11/19/1991
5,066,669                   07/489,565                   11/19/1991
5,066,676                   07/476,762                   11/19/1991
5,066,679                   07/321,034                   11/19/1991
5,066,680                   07/475,301                   11/19/1991
5,066,684                   07/535,007                   11/19/1991
5,066,685                   07/483,605                   11/19/1991
5,066,688                   07/683,051                   11/19/1991
5,066,690                   07/547,372                   11/19/1991
5,066,691                   07/442,637                   11/19/1991
5,066,694                   07/589,296                   11/19/1991
5,066,695                   07/374,321                   11/19/1991
5,066,697                   07/537,469                   11/19/1991
5,066,704                   07/526,388                   11/19/1991
5,066,713                   07/502,692                   11/19/1991
5,066,714                   07/422,206                   11/19/1991
5,066,724                   07/506,526                   11/19/1991
5,066,728                   07/589,139                   11/19/1991
5,066,739                   07/560,652                   11/19/1991
5,066,743                   07/568,386                   11/19/1991
5,066,745                   07/529,653                   11/19/1991
5,066,749                   07/580,695                   11/19/1991
5,066,757                   07/460,552                   11/19/1991
5,066,758                   07/385,908                   11/19/1991
5,066,759                   07/466,438                   11/19/1991
5,066,765                   07/507,536                   11/19/1991
5,066,768                   07/540,793                   11/19/1991
5,066,769                   07/498,253                   11/19/1991
5,066,771                   07/502,741                   11/19/1991
5,066,775                   07/475,267                   11/19/1991
5,066,776                   07/565,729                   11/19/1991
5,066,779                   07/472,260                   11/19/1991
5,066,783                   07/244,879                   11/19/1991
5,066,789                   07/415,154                   11/19/1991
5,066,790                   07/460,989                   11/19/1991
5,066,794                   07/471,064                   11/19/1991
5,066,795                   07/476,542                   11/19/1991
5,066,797                   07/377,371                   11/19/1991
5,066,814                   07/485,355                   11/19/1991
5,066,820                   07/551,953                   11/19/1991
5,066,822                   07/571,925                   11/19/1991
5,066,836                   07/664,497                   11/19/1991
5,066,837                   07/664,499                   11/19/1991
5,066,841                   07/560,919                   11/19/1991
5,066,844                   07/587,793                   11/19/1991
5,066,848                   07/514,553                   11/19/1991
5,066,858                   07/510,612                   11/19/1991
5,066,859                   07/526,184                   11/19/1991
5,066,861                   07/299,103                   11/19/1991
5,066,863                   07/439,035                   11/19/1991
5,066,866                   07/456,990                   11/19/1991
5,066,885                   07/343,366                   11/19/1991
5,066,888                   07/401,887                   11/19/1991
5,066,889                   07/510,894                   11/19/1991
5,066,895                   07/424,403                   11/19/1991
5,066,897                   07/652,205                   11/19/1991
5,066,899                   07/497,256                   11/19/1991
5,066,903                   07/608,813                   11/19/1991
5,066,905                   07/426,944                   11/19/1991
5,066,909                   07/472,505                   11/19/1991
5,066,913                   07/517,887                   11/19/1991
5,066,922                   07/686,852                   11/19/1991
5,066,926                   07/588,766                   11/19/1991
5,066,928                   07/517,941                   11/19/1991
5,066,935                   07/651,115                   11/19/1991
5,066,944                   07/588,023                   11/19/1991
5,066,950                   07/344,161                   11/19/1991
5,066,951                   07/426,893                   11/19/1991
5,066,957                   07/511,681                   11/19/1991
5,066,960                   07/503,974                   11/19/1991
5,066,970                   07/596,396                   11/19/1991
5,066,994                   07/331,156                   11/19/1991
5,067,006                   07/567,814                   11/19/1991
5,067,007                   07/645,357                   11/19/1991
5,067,019                   07/331,551                   11/19/1991
5,067,026                   07/344,827                   11/19/1991
5,067,034                   07/321,177                   11/19/1991
5,067,036                   07/482,705                   11/19/1991
5,067,041                   07/428,390                   11/19/1991
5,067,042                   07/300,233                   11/19/1991
5,067,058                   07/501,280                   11/19/1991
5,067,059                   07/696,867                   11/19/1991
5,067,061                   07/575,154                   11/19/1991
5,067,062                   07/550,185                   11/19/1991
5,067,066                   07/651,518                   11/19/1991
5,067,067                   07/376,269                   11/19/1991
5,067,073                   07/227,844                   11/19/1991
5,067,076                   07/685,179                   11/19/1991
5,067,077                   07/671,660                   11/19/1991
5,067,081                   07/400,324                   11/19/1991
5,067,083                   07/316,836                   11/19/1991
5,067,085                   07/352,600                   11/19/1991
5,067,092                   07/469,860                   11/19/1991
5,067,096                   07/582,574                   11/19/1991
5,067,105                   07/120,884                   11/19/1991
5,067,115                   07/608,787                   11/19/1991
5,067,117                   07/426,278                   11/19/1991
5,067,121                   07/263,660                   11/19/1991
5,067,122                   07/482,375                   11/19/1991
5,067,124                   07/414,036                   11/19/1991
5,067,126                   07/389,768                   11/19/1991
5,067,129                   07/394,696                   11/19/1991
5,067,134                   07/667,610                   11/19/1991
5,067,146                   07/606,919                   11/19/1991
5,067,149                   07/362,038                   11/19/1991
5,067,153                   07/589,385                   11/19/1991
5,067,156                   07/490,433                   11/19/1991
5,067,157                   07/442,770                   11/19/1991
5,067,158                   06/744,171                   11/19/1991
5,067,166                   07/498,310                   11/19/1991
5,067,170                   07/457,496                   11/19/1991
5,067,172                   07/358,147                   11/19/1991

                  PATENTS WHICH EXPIRED ON November 21, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,467,483                   08/178,898                   11/21/1995
5,467,485                   08/226,777                   11/21/1995
5,467,489                   08/184,842                   11/21/1995
5,467,494                   08/280,914                   11/21/1995
5,467,497                   08/303,729                   11/21/1995
5,467,500                   08/009,816                   11/21/1995
5,467,501                   08/259,144                   11/21/1995
5,467,504                   08/191,958                   11/21/1995
5,467,506                   08/338,806                   11/21/1995
5,467,510                   08/311,953                   11/21/1995
5,467,516                   08/230,829                   11/21/1995
5,467,522                   08/295,410                   11/21/1995
5,467,523                   08/299,833                   11/21/1995
5,467,527                   08/280,783                   11/21/1995
5,467,532                   08/262,646                   11/21/1995
5,467,540                   08/272,798                   11/21/1995
5,467,542                   08/294,310                   11/21/1995
5,467,543                   08/294,119                   11/21/1995
5,467,545                   08/236,187                   11/21/1995
5,467,547                   08/150,391                   11/21/1995
5,467,548                   08/281,091                   11/21/1995
5,467,550                   08/159,001                   11/21/1995
5,467,554                   08/176,656                   11/21/1995
5,467,559                   08/276,947                   11/21/1995
5,467,578                   08/342,659                   11/21/1995
5,467,579                   08/262,395                   11/21/1995
5,467,580                   08/224,880                   11/21/1995
5,467,584                   08/097,537                   11/21/1995
5,467,587                   08/327,500                   11/21/1995
5,467,589                   08/110,578                   11/21/1995
5,467,591                   08/175,972                   11/21/1995
5,467,599                   07/996,346                   11/21/1995
5,467,617                   08/288,689                   11/21/1995
5,467,620                   08/224,162                   11/21/1995
5,467,622                   08/236,430                   11/21/1995
5,467,639                   08/291,745                   11/21/1995
5,467,641                   08/194,950                   11/21/1995
5,467,644                   08/051,977                   11/21/1995
5,467,647                   08/249,032                   11/21/1995
5,467,657                   08/174,981                   11/21/1995
5,467,660                   08/252,223                   11/21/1995
5,467,665                   08/298,949                   11/21/1995
5,467,670                   08/288,710                   11/21/1995
5,467,675                   08/393,890                   11/21/1995
5,467,676                   08/091,611                   11/21/1995
5,467,688                   07/509,580                   11/21/1995
5,467,692                   08/390,229                   11/21/1995
5,467,696                   08/374,042                   11/21/1995
5,467,700                   08/015,978                   11/21/1995
5,467,712                   08/324,028                   11/21/1995
5,467,714                   08/168,714                   11/21/1995
5,467,721                   08/061,371                   11/21/1995
5,467,723                   08/039,311                   11/21/1995
5,467,728                   08/264,120                   11/21/1995
5,467,729                   08/127,535                   11/21/1995
5,467,733                   08/291,517                   11/21/1995
5,467,734                   08/255,606                   11/21/1995
5,467,737                   08/216,486                   11/21/1995
5,467,738                   08/169,411                   11/21/1995
5,467,739                   08/296,322                   11/21/1995
5,467,759                   08/370,100                   11/21/1995
5,467,760                   08/340,607                   11/21/1995
5,467,766                   08/135,740                   11/21/1995
5,467,787                   08/295,418                   11/21/1995
5,467,790                   08/090,501                   11/21/1995
5,467,800                   08/337,137                   11/21/1995
5,467,824                   08/352,910                   11/21/1995
5,467,825                   08/332,109                   11/21/1995
5,467,826                   08/316,535                   11/21/1995
5,467,830                   08/132,198                   11/21/1995
5,467,831                   08/294,070                   11/21/1995
5,467,834                   08/287,501                   11/21/1995
5,467,842                   08/366,257                   11/21/1995
5,467,844                   08/287,404                   11/21/1995
5,467,845                   08/323,738                   11/21/1995
5,467,850                   08/168,567                   11/21/1995
5,467,853                   08/260,724                   11/21/1995
5,467,863                   08/288,391                   11/21/1995
5,467,874                   08/370,860                   11/21/1995
5,467,876                   08/416,562                   11/21/1995
5,467,877                   08/260,241                   11/21/1995
5,467,878                   08/153,727                   11/21/1995
5,467,881                   08/267,269                   11/21/1995
5,467,885                   08/158,755                   11/21/1995
5,467,889                   08/273,658                   11/21/1995
5,467,890                   08/237,652                   11/21/1995
5,467,891                   08/421,397                   11/21/1995
5,467,896                   08/231,925                   11/21/1995
5,467,902                   08/232,263                   11/21/1995
5,467,903                   08/230,309                   11/21/1995
5,467,904                   08/140,482                   11/21/1995
5,467,905                   08/323,551                   11/21/1995
5,467,907                   07/848,917                   11/21/1995
5,467,910                   08/282,370                   11/21/1995
5,467,912                   08/155,798                   11/21/1995
5,467,917                   08/247,264                   11/21/1995
5,467,918                   08/209,259                   11/21/1995
5,467,919                   08/113,070                   11/21/1995
5,467,927                   08/308,935                   11/21/1995
5,467,938                   08/123,049                   11/21/1995
5,467,949                   08/232,840                   11/21/1995
5,467,950                   08/015,331                   11/21/1995
5,467,951                   08/140,611                   11/21/1995
5,467,952                   08/141,983                   11/21/1995
5,467,954                   08/180,675                   11/21/1995
5,467,956                   08/073,668                   11/21/1995
5,467,958                   08/332,476                   11/21/1995
5,467,959                   08/380,730                   11/21/1995
5,467,973                   08/051,067                   11/21/1995
5,467,980                   08/329,284                   11/21/1995
5,467,982                   08/080,888                   11/21/1995
5,467,986                   08/118,519                   11/21/1995
5,467,990                   08/260,262                   11/21/1995
5,467,992                   08/178,415                   11/21/1995
5,467,997                   08/354,547                   11/21/1995
5,467,999                   08/343,641                   11/21/1995
5,468,000                   08/421,302                   11/21/1995
5,468,001                   07/820,360                   11/21/1995
5,468,004                   08/439,698                   11/21/1995
5,468,005                   08/270,373                   11/21/1995
5,468,006                   08/314,136                   11/21/1995
5,468,007                   08/139,713                   11/21/1995
5,468,010                   08/283,846                   11/21/1995
5,468,014                   08/161,387                   11/21/1995
5,468,016                   08/152,217                   11/21/1995
5,468,030                   08/411,914                   11/21/1995
5,468,034                   08/306,603                   11/21/1995
5,468,037                   07/888,188                   11/21/1995
5,468,038                   08/301,126                   11/21/1995
5,468,040                   08/189,635                   11/21/1995
5,468,042                   08/095,149                   11/21/1995
5,468,043                   08/291,102                   11/21/1995
5,468,051                   08/294,577                   11/21/1995
5,468,054                   08/160,265                   11/21/1995
5,468,056                   08/334,247                   11/21/1995
5,468,069                   08/100,928                   11/21/1995
5,468,073                   08/302,613                   11/21/1995
5,468,080                   08/036,967                   11/21/1995
5,468,088                   08/175,815                   11/21/1995
5,468,091                   07/983,550                   11/21/1995
5,468,092                   08/163,137                   11/21/1995
5,468,094                   08/102,837                   11/21/1995
5,468,095                   08/158,382                   11/21/1995
5,468,099                   08/104,621                   11/21/1995
5,468,105                   08/254,663                   11/21/1995
5,468,114                   08/263,371                   11/21/1995
5,468,115                   08/348,598                   11/21/1995
5,468,117                   08/303,235                   11/21/1995
5,468,120                   08/235,685                   11/21/1995
5,468,122                   08/265,914                   11/21/1995
5,468,124                   08/272,844                   11/21/1995
5,468,136                   08/282,544                   11/21/1995
5,468,143                   08/246,666                   11/21/1995
5,468,144                   08/265,210                   11/21/1995
5,468,147                   08/278,098                   11/21/1995
5,468,148                   08/174,413                   11/21/1995
5,468,150                   08/295,301                   11/21/1995
5,468,165                   08/305,256                   11/21/1995
5,468,170                   08/307,157                   11/21/1995
5,468,171                   08/326,921                   11/21/1995
5,468,173                   08/129,953                   11/21/1995
5,468,174                   08/156,403                   11/21/1995
5,468,187                   08/196,753                   11/21/1995
5,468,188                   07/955,680                   11/21/1995
5,468,192                   08/361,210                   11/21/1995
5,468,204                   08/321,816                   11/21/1995
5,468,210                   08/232,359                   11/21/1995
5,468,211                   08/132,646                   11/21/1995
5,468,215                   08/280,308                   11/21/1995
5,468,219                   07/838,168                   11/21/1995
5,468,221                   08/262,367                   11/21/1995
5,468,222                   08/025,890                   11/21/1995
5,468,228                   08/244,579                   11/21/1995
5,468,239                   08/126,674                   11/21/1995
5,468,255                   08/373,317                   11/21/1995
5,468,256                   08/211,788                   11/21/1995
5,468,270                   08/149,788                   11/21/1995
5,468,273                   08/162,528                   11/21/1995
5,468,276                   08/247,916                   11/21/1995
5,468,290                   08/282,354                   11/21/1995
5,468,294                   08/248,418                   11/21/1995
5,468,313                   08/346,587                   11/21/1995
5,468,314                   08/166,118                   11/21/1995
5,468,325                   08/140,823                   11/21/1995
5,468,345                   08/237,835                   11/21/1995
5,468,346                   08/217,097                   11/21/1995
5,468,351                   08/192,608                   11/21/1995
5,468,355                   08/072,277                   11/21/1995
5,468,358                   08/088,075                   11/21/1995
5,468,373                   08/243,378                   11/21/1995
5,468,381                   08/251,839                   11/21/1995
5,468,392                   08/159,986                   11/21/1995
5,468,407                   08/333,659                   11/21/1995
5,468,418                   08/346,989                   11/21/1995
5,468,425                   08/283,625                   11/21/1995
5,468,427                   08/127,637                   11/21/1995
5,468,429                   08/228,199                   11/21/1995
5,468,432                   08/416,103                   11/21/1995
5,468,436                   08/394,810                   11/21/1995
5,468,448                   08/112,637                   11/21/1995
5,468,465                   08/271,921                   11/21/1995
5,468,470                   08/286,957                   11/21/1995
5,468,473                   08/194,096                   11/21/1995
5,468,479                   07/905,279                   11/21/1995
5,468,486                   08/205,194                   11/21/1995
5,468,487                   08/079,608                   11/21/1995
5,468,492                   08/174,202                   11/21/1995
5,468,509                   08/219,589                   11/21/1995
5,468,513                   08/230,632                   11/21/1995
5,468,514                   08/273,635                   11/21/1995
5,468,520                   08/265,164                   11/21/1995
5,468,523                   08/031,560                   11/21/1995
5,468,534                   08/292,219                   11/21/1995
5,468,559                   08/290,619                   11/21/1995
5,468,573                   08/264,540                   11/21/1995
5,468,575                   08/169,429                   11/21/1995
5,468,588                   08/324,576                   11/21/1995
5,468,620                   08/104,077                   11/21/1995
5,468,632                   08/124,674                   11/21/1995
5,468,635                   08/243,074                   11/21/1995
5,468,638                   07/952,004                   11/21/1995
5,468,644                   08/146,063                   11/21/1995
5,468,650                   08/203,683                   11/21/1995
5,468,655                   08/332,311                   11/21/1995
5,468,674                   08/260,155                   11/21/1995
5,468,683                   08/125,375                   11/21/1995
5,468,690                   08/196,905                   11/21/1995
5,468,728                   08/117,653                   11/21/1995
5,468,733                   08/130,032                   11/21/1995
5,468,751                   08/126,154                   11/21/1995
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5,468,766                   08/128,506                   11/21/1995
5,468,771                   08/190,110                   11/21/1995
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5,468,782                   08/388,340                   11/21/1995
5,468,783                   08/396,937                   11/21/1995
5,468,786                   08/191,141                   11/21/1995
5,468,788                   08/274,595                   11/21/1995
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5,469,526                   08/178,929                   11/21/1995
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5,469,575                   07/961,750                   11/21/1995