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

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

                  PATENTS WHICH EXPIRED ON December 16, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                      Application                     Issue
Number                        Number                         Date

4,628,549                   06/606,601                   12/16/86
4,628,553                   06/715,714                   12/16/86
4,628,554                   06/776,795                   12/16/86
4,628,558                   06/698,093                   12/16/86
4,628,559                   06/662,342                   12/16/86
4,628,570                   06/655,542                   12/16/86
4,628,572                   06/660,040                   12/16/86
4,628,581                   06/695,131                   12/16/86
4,628,586                   06/751,559                   12/16/86
4,628,589                   06/656,056                   12/16/86
4,628,591                   06/666,698                   12/16/86
4,628,593                   06/768,790                   12/16/86
4,628,611                   06/647,811                   12/16/86
4,628,634                   06/686,027                   12/16/86
4,628,636                   06/611,725                   12/16/86
4,628,641                   06/719,099                   12/16/86
4,628,644                   06/637,876                   12/16/86
4,628,646                   06/705,737                   12/16/86
4,628,658                   06/692,383                   12/16/86
4,628,662                   06/732,519                   12/16/86
4,628,664                   06/799,062                   12/16/86
4,628,668                   06/707,522                   12/16/86
4,628,669                   06/756,742                   12/16/86
4,628,675                   06/580,310                   12/16/86
4,628,677                   06/775,618                   12/16/86
4,628,686                   06/829,529                   12/16/86
4,628,688                   06/527,158                   12/16/86
4,628,691                   06/623,333                   12/16/86
4,628,694                   06/562,959                   12/16/86
4,628,698                   06/689,905                   12/16/86
4,628,710                   06/680,337                   12/16/86
4,628,713                   06/717,815                   12/16/86
4,628,717                   06/783,675                   12/16/86
4,628,720                   06/622,157                   12/16/86
4,628,728                   06/831,611                   12/16/86
4,628,730                   06/667,431                   12/16/86
4,628,731                   06/818,593                   12/16/86
4,628,736                   06/691,091                   12/16/86
4,628,740                   06/785,909                   12/16/86
4,628,742                   06/735,688                   12/16/86
4,628,748                   06/718,730                   12/16/86
4,628,754                   06/660,081                   12/16/86
4,628,757                   06/623,407                   12/16/86
4,628,758                   06/681,658                   12/16/86
4,628,759                   06/669,493                   12/16/86
4,628,760                   06/458,198                   12/16/86
4,628,761                   06/743,354                   12/16/86
4,628,766                   06/672,898                   12/16/86
4,628,767                   06/640,910                   12/16/86
4,628,772                   06/775,620                   12/16/86
4,628,775                   06/660,079                   12/16/86
4,628,777                   06/720,302                   12/16/86
4,628,780                   06/733,039                   12/16/86
4,628,781                   06/627,451                   12/16/86
4,628,796                   06/620,680                   12/16/86
4,628,804                   06/770,849                   12/16/86
4,628,807                   06/697,115                   12/16/86
4,628,809                   06/762,708                   12/16/86
4,628,811                   06/705,221                   12/16/86
4,628,814                   06/653,691                   12/16/86
4,628,816                   06/622,693                   12/16/86
4,628,831                   06/726,963                   12/16/86
4,628,833                   06/835,822                   12/16/86
4,628,835                   06/656,084                   12/16/86
4,628,842                   06/841,313                   12/16/86
4,628,844                   06/724,246                   12/16/86
4,628,847                   06/492,913                   12/16/86
4,628,863                   06/722,806                   12/16/86
4,628,865                   06/711,731                   12/16/86
4,628,866                   06/623,217                   12/16/86
4,628,869                   06/697,173                   12/16/86
4,628,870                   06/636,450                   12/16/86
4,628,876                   06/733,947                   12/16/86
4,628,884                   06/813,022                   12/16/86
4,628,890                   06/645,869                   12/16/86
4,628,899                   06/624,679                   12/16/86
4,628,901                   06/832,012                   12/16/86
4,628,905                   06/726,180                   12/16/86
4,628,914                   06/813,850                   12/16/86
4,628,915                   06/734,074                   12/16/86
4,628,924                   06/571,570                   12/16/86
4,628,931                   06/611,974                   12/16/86
4,628,936                   06/580,250                   12/16/86
4,628,940                   06/528,691                   12/16/86
4,628,947                   06/752,022                   12/16/86
4,628,962                   06/816,555                   12/16/86
4,628,975                   06/613,504                   12/16/86
4,628,977                   06/666,935                   12/16/86
4,628,981                   06/719,608                   12/16/86
4,628,988                   06/559,875                   12/16/86
4,628,989                   06/381,494                   12/16/86
4,628,991                   06/674,817                   12/16/86
4,629,006                   06/772,732                   12/16/86
4,629,011                   06/764,613                   12/16/86
4,629,012                   06/752,609                   12/16/86
4,629,013                   06/742,686                   12/16/86
4,629,016                   06/727,423                   12/16/86
4,629,023                   06/770,228                   12/16/86
4,629,026                   06/668,438                   12/16/86
4,629,033                   06/625,764                   12/16/86
4,629,037                   06/651,331                   12/16/86
4,629,038                   06/734,632                   12/16/86
4,629,043                   06/575,663                   12/16/86
4,629,053                   06/249,931                   12/16/86
4,629,054                   06/782,590                   12/16/86
4,629,075                   06/770,604                   12/16/86
4,629,093                   06/637,753                   12/16/86
4,629,100                   06/797,822                   12/16/86
4,629,116                   06/817,778                   12/16/86
4,629,118                   06/491,930                   12/16/86
4,629,119                   06/574,277                   12/16/86
4,629,126                   06/700,606                   12/16/86
4,629,138                   06/622,057                   12/16/86
4,629,144                   06/744,226                   12/16/86
4,629,145                   06/845,740                   12/16/86
4,629,149                   06/708,930                   12/16/86
4,629,158                   06/646,215                   12/16/86
4,629,162                   06/729,953                   12/16/86
4,629,164                   06/463,892                   12/16/86
4,629,165                   06/670,058                   12/16/86
4,629,173                   06/795,548                   12/16/86
4,629,174                   06/615,906                   12/16/86
4,629,183                   06/639,249                   12/16/86
4,629,188                   06/588,061                   12/16/86
4,629,193                   06/796,185                   12/16/86
4,629,197                   06/764,228                   12/16/86
4,629,201                   06/776,288                   12/16/86
4,629,202                   06/728,809                   12/16/86
4,629,209                   06/580,904                   12/16/86
4,629,216                   06/506,869                   12/16/86
4,629,225                   06/764,095                   12/16/86
4,629,232                   06/776,077                   12/16/86
4,629,233                   06/754,968                   12/16/86
4,629,241                   06/616,858                   12/16/86
4,629,247                   06/735,339                   12/16/86
4,629,258                   06/686,477                   12/16/86
4,629,259                   06/780,396                   12/16/86
4,629,264                   06/678,339                   12/16/86
4,629,266                   06/744,845                   12/16/86
4,629,267                   06/856,862                   12/16/86
4,629,273                   06/710,370                   12/16/86
4,629,286                   06/598,274                   12/16/86
4,629,288                   06/561,693                   12/16/86
4,629,308                   06/628,233                   12/16/86
4,629,309                   06/674,662                   12/16/86
4,629,316                   06/545,413                   12/16/86
4,629,317                   06/294,830                   12/16/86
4,629,318                   06/438,864                   12/16/86
4,629,321                   06/781,095                   12/16/86
4,629,326                   06/754,158                   12/16/86
4,629,327                   06/754,159                   12/16/86
4,629,338                   06/846,390                   12/16/86
4,629,347                   06/685,897                   12/16/86
4,629,355                   06/716,157                   12/16/86
4,629,367                   06/630,081                   12/16/86
4,629,373                   06/506,725                   12/16/86
4,629,374                   06/708,787                   12/16/86
4,629,377                   06/760,697                   12/16/86
4,629,380                   06/817,974                   12/16/86
4,629,382                   06/555,545                   12/16/86
4,629,389                   06/774,371                   12/16/86
4,629,393                   06/735,752                   12/16/86
4,629,395                   06/612,124                   12/16/86
4,629,398                   06/731,636                   12/16/86
4,629,408                   06/773,425                   12/16/86
4,629,416                   06/743,468                   12/16/86
4,629,421                   06/799,071                   12/16/86
4,629,427                   06/796,654                   12/16/86
4,629,429                   06/787,675                   12/16/86
4,629,433                   06/624,900                   12/16/86
4,629,438                   06/766,894                   12/16/86
4,629,441                   06/610,959                   12/16/86
4,629,450                   06/731,082                   12/16/86
4,629,464                   06/770,722                   12/16/86
4,629,474                   06/772,987                   12/16/86
4,629,479                   06/733,801                   12/16/86
4,629,484                   06/746,943                   12/16/86
4,629,486                   06/798,933                   12/16/86
4,629,492                   06/665,221                   12/16/86
4,629,494                   06/723,450                   12/16/86
4,629,503                   06/723,879                   12/16/86
4,629,513                   06/716,701                   12/16/86
4,629,514                   06/708,406                   12/16/86
4,629,519                   06/781,372                   12/16/86
4,629,520                   06/640,577                   12/16/86
4,629,521                   06/679,725                   12/16/86
4,629,543                   06/815,147                   12/16/86
4,629,547                   06/671,918                   12/16/86
4,629,550                   06/776,785                   12/16/86
4,629,557                   06/755,476                   12/16/86
4,629,558                   06/820,818                   12/16/86
4,629,569                   06/606,600                   12/16/86
4,629,587                   06/536,444                   12/16/86
4,629,589                   06/623,125                   12/16/86
4,629,591                   06/763,621                   12/16/86
4,629,605                   06/726,275                   12/16/86
4,629,606                   06/755,402                   12/16/86
4,629,610                   06/732,532                   12/16/86
4,629,612                   06/517,367                   12/16/86
4,629,615                   06/633,769                   12/16/86
4,629,625                   06/645,446                   12/16/86
4,629,632                   06/759,235                   12/16/86
4,629,636                   06/791,804                   12/16/86
4,629,641                   06/666,497                   12/16/86
4,629,642                   06/776,299                   12/16/86
4,629,644                   06/781,605                   12/16/86
4,629,646                   06/753,779                   12/16/86
4,629,654                   06/728,802                   12/16/86
4,629,657                   06/449,165                   12/16/86
4,629,659                   06/609,751                   12/16/86
4,629,662                   06/673,076                   12/16/86
4,629,664                   06/792,888                   12/16/86
4,629,666                   06/800,857                   12/16/86
4,629,694                   06/513,184                   12/16/86
4,629,697                   06/564,866                   12/16/86
4,629,700                   06/556,625                   12/16/86
4,629,707                   06/820,333                   12/16/86
4,629,713                   06/691,765                   12/16/86
4,629,714                   06/791,495                   12/16/86
4,629,724                   06/677,714                   12/16/86
4,629,725                   06/712,507                   12/16/86
4,629,726                   06/632,854                   12/16/86
4,629,741                   06/789,973                   12/16/86
4,629,745                   06/800,195                   12/16/86
4,629,748                   06/738,807                   12/16/86
4,629,749                   06/758,392                   12/16/86
4,629,752                   06/757,717                   12/16/86
4,629,755                   06/848,692                   12/16/86
4,629,756                   06/794,398                   12/16/86
4,629,759                   06/791,875                   12/16/86
4,629,760                   06/793,967                   12/16/86
4,629,772                   06/715,265                   12/16/86
4,629,774                   06/771,758                   12/16/86
4,629,778                   06/816,312                   12/16/86
4,629,779                   06/546,113                   12/16/86
4,629,792                   06/773,714                   12/16/86
4,629,800                   06/706,885                   12/16/86
4,629,802                   06/707,358                   12/16/86
4,629,806                   06/239,763                   12/16/86
4,629,807                   06/826,642                   12/16/86
4,629,808                   06/746,768                   12/16/86
4,629,818                   06/794,328                   12/16/86
4,629,819                   06/727,632                   12/16/86
4,629,822                   06/841,263                   12/16/86
4,629,823                   06/495,131                   12/16/86
4,629,828                   06/522,757                   12/16/86
4,629,830                   06/582,610                   12/16/86
4,629,831                   06/579,530                   12/16/86
4,629,840                   06/720,148                   12/16/86
4,629,841                   06/654,301                   12/16/86
4,629,842                   06/713,229                   12/16/86
4,629,852                   06/579,658                   12/16/86
4,629,857                   06/710,858                   12/16/86
4,629,862                   06/671,732                   12/16/86
4,629,864                   06/587,704                   12/16/86
4,629,879                   06/619,453                   12/16/86
4,629,886                   06/591,511                   12/16/86
4,629,888                   06/788,951                   12/16/86
4,629,910                   06/788,525                   12/16/86
4,629,915                   06/621,715                   12/16/86
4,629,919                   06/456,525                   12/16/86
4,629,925                   06/673,460                   12/16/86
4,629,934                   06/769,978                   12/16/86
4,629,945                   06/686,979                   12/16/86
4,629,946                   06/718,320                   12/16/86
4,629,951                   06/780,492                   12/16/86
4,629,973                   06/626,344                   12/16/86
4,629,976                   06/706,696                   12/16/86
4,629,980                   06/737,981                   12/16/86
4,629,984                   06/705,835                   12/16/86
4,629,994                   06/743,369                   12/16/86
4,630,002                   06/784,603                   12/16/86
4,630,008                   06/717,533                   12/16/86
4,630,032                   06/616,180                   12/16/86
4,630,036                   06/497,384                   12/16/86
4,630,042                   06/737,071                   12/16/86
4,630,051                   06/707,498                   12/16/86
4,630,064                   06/537,485                   12/16/86
4,630,065                   06/492,358                   12/16/86
4,630,069                   06/737,507                   12/16/86
4,630,077                   06/686,484                   12/16/86
4,630,081                   06/683,705                   12/16/86
4,630,082                   06/820,837                   12/16/86
4,630,089                   06/654,701                   12/16/86
4,630,090                   06/654,604                   12/16/86
4,630,100                   06/637,082                   12/16/86
4,630,102                   06/659,452                   12/16/86
4,630,103                   06/638,571                   12/16/86
4,630,104                   06/623,348                   12/16/86
4,630,105                   06/636,378                   12/16/86
4,630,108                   06/593,596                   12/16/86
4,630,111                   06/666,374                   12/16/86
4,630,113                   06/649,396                   12/16/86
4,630,117                   06/739,358                   12/16/86
4,630,129                   06/644,678                   12/16/86
4,630,149                   06/578,011                   12/16/86
4,630,156                   06/577,780                   12/16/86
4,630,159                   06/742,018                   12/16/86
4,630,163                   06/696,998                   12/16/86
4,630,179                   06/704,777                   12/16/86
4,630,183                   06/435,591                   12/16/86
4,630,192                   06/495,563                   12/16/86
4,630,194                   06/500,501                   12/16/86
4,630,197                   06/597,625                   12/16/86
4,630,201                   06/580,003                   12/16/86
4,630,219                   06/554,855                   12/16/86
4,630,223                   06/586,204                   12/16/86
4,630,226                   06/650,705                   12/16/86
4,630,228                   06/392,459                   12/16/86
4,630,232                   06/594,441                   12/16/86
4,630,237                   06/759,009                   12/16/86
4,630,238                   06/659,191                   12/16/86
4,630,241                   06/563,504                   12/16/86
4,630,251                   06/472,473                   12/16/86
4,630,261                   06/635,788                   12/16/86
4,630,267                   06/680,409                   12/16/86
4,630,270                   06/671,832                   12/16/86
4,630,273                   06/814,157                   12/16/86
4,630,285                   06/712,934                   12/16/86
4,630,291                   06/613,985                   12/16/86
4,630,294                   06/755,759                   12/16/86
4,630,296                   06/755,552                   12/16/86
4,630,299                   06/704,123                   12/16/86
4,630,308                   06/633,114                   12/16/86
4,630,312                   06/236,533                   12/16/86
4,630,314                   06/424,605                   12/16/86
4,630,316                   06/484,220                   12/16/86

                  PATENTS WHICH EXPIRED ON December 11, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

4,975,983                   07/361,641                   12/11/90
4,975,990                   07/473,869                   12/11/90
4,975,996                   07/416,464                   12/11/90
4,976,001                   07/267,305                   12/11/90
4,976,006                   07/365,969                   12/11/90
4,976,009                   07/451,087                   12/11/90
4,976,027                   07/276,846                   12/11/90
4,976,029                   07/464,364                   12/11/90
4,976,036                   07/429,732                   12/11/90
4,976,037                   07/284,404                   12/11/90
4,976,041                   07/222,099                   12/11/90
4,976,047                   07/397,013                   12/11/90
4,976,057                   07/222,027                   12/11/90
4,976,060                   07/369,025                   12/11/90
4,976,063                   07/364,208                   12/11/90
4,976,064                   07/343,177                   12/11/90
4,976,065                   07/438,854                   12/11/90
4,976,079                   07/273,374                   12/11/90
4,976,081                   07/135,394                   12/11/90
4,976,088                   07/306,478                   12/11/90
4,976,089                   07/469,773                   12/11/90
4,976,090                   07/494,930                   12/11/90
4,976,091                   07/341,086                   12/11/90
4,976,094                   07/150,244                   12/11/90
4,976,100                   07/359,531                   12/11/90
4,976,102                   07/191,529                   12/11/90
4,976,107                   07/472,815                   12/11/90
4,976,112                   07/464,375                   12/11/90
4,976,116                   07/370,752                   12/11/90
4,976,117                   07/314,827                   12/11/90
4,976,119                   06/563,921                   12/11/90
4,976,121                   07/414,707                   12/11/90
4,976,124                   07/380,284                   12/11/90
4,976,127                   07/382,780                   12/11/90
4,976,139                   07/477,194                   12/11/90
4,976,141                   07/487,832                   12/11/90
4,976,153                   07/262,647                   12/11/90
4,976,154                   07/081,985                   12/11/90
4,976,156                   07/429,155                   12/11/90
4,976,158                   07/348,945                   12/11/90
4,976,159                   07/419,682                   12/11/90
4,976,160                   07/314,575                   12/11/90
4,976,173                   07/385,454                   12/11/90
4,976,178                   07/225,908                   12/11/90
4,976,179                   07/205,450                   12/11/90
4,976,189                   07/374,756                   12/11/90
4,976,191                   07/422,742                   12/11/90
4,976,195                   07/521,608                   12/11/90
4,976,204                   07/456,182                   12/11/90
4,976,208                   07/444,661                   12/11/90
4,976,211                   07/283,202                   12/11/90
4,976,215                   07/335,303                   12/11/90
4,976,221                   07/078,643                   12/11/90
4,976,230                   07/523,864                   12/11/90
4,976,242                   07/469,297                   12/11/90
4,976,249                   07/371,291                   12/11/90
4,976,250                   07/279,071                   12/11/90
4,976,259                   07/266,823                   12/11/90
4,976,264                   07/349,856                   12/11/90
4,976,267                   07/220,083                   12/11/90
4,976,272                   07/331,398                   12/11/90
4,976,276                   07/472,076                   12/11/90
4,976,279                   07/438,807                   12/11/90
4,976,281                   07/521,394                   12/11/90
4,976,290                   07/364,858                   12/11/90
4,976,291                   07/418,735                   12/11/90
4,976,295                   07/406,050                   12/11/90
4,976,308                   07/483,385                   12/11/90
4,976,309                   07/444,145                   12/11/90
4,976,323                   07/373,405                   12/11/90
4,976,326                   07/455,045                   12/11/90
4,976,328                   07/334,191                   12/11/90
4,976,330                   07/280,437                   12/11/90
4,976,340                   07/475,751                   12/11/90
4,976,343                   07/411,277                   12/11/90
4,976,345                   07/414,865                   12/11/90
4,976,346                   07/299,184                   12/11/90
4,976,347                   07/281,353                   12/11/90
4,976,348                   07/357,767                   12/11/90
4,976,349                   07/201,177                   12/11/90
4,976,352                   07/201,006                   12/11/90
4,976,358                   07/502,522                   12/11/90
4,976,361                   07/327,887                   12/11/90
4,976,363                   07/443,497                   12/11/90
4,976,364                   07/472,651                   12/11/90
4,976,365                   07/435,606                   12/11/90
4,976,366                   07/463,160                   12/11/90
4,976,372                   07/364,802                   12/11/90
4,976,375                   07/325,681                   12/11/90
4,976,378                   07/497,733                   12/11/90
4,976,379                   07/197,589                   12/11/90
4,976,385                   07/279,102                   12/11/90
4,976,386                   07/367,880                   12/11/90
4,976,399                   07/301,931                   12/11/90
4,976,401                   07/307,896                   12/11/90
4,976,405                   07/485,906                   12/11/90
4,976,410                   07/446,477                   12/11/90
4,976,411                   07/430,368                   12/11/90
4,976,413                   07/442,002                   12/11/90
4,976,414                   07/260,420                   12/11/90
4,976,417                   07/393,182                   12/11/90
4,976,421                   07/415,476                   12/11/90
4,976,431                   07/488,264                   12/11/90
4,976,435                   07/258,833                   12/11/90
4,976,441                   07/480,608                   12/11/90
4,976,448                   07/388,669                   12/11/90
4,976,449                   07/374,288                   12/11/90
4,976,451                   07/235,470                   12/11/90
4,976,453                   07/348,514                   12/11/90
4,976,454                   07/357,467                   12/11/90
4,976,456                   07/250,314                   12/11/90
4,976,463                   07/323,755                   12/11/90
4,976,465                   07/221,284                   12/11/90
4,976,473                   07/305,104                   12/11/90
4,976,476                   07/366,506                   12/11/90
4,976,477                   07/412,147                   12/11/90
4,976,483                   07/357,927                   12/11/90
4,976,485                   07/439,335                   12/11/90
4,976,486                   07/511,446                   12/11/90
4,976,490                   07/253,654                   12/11/90
4,976,491                   07/345,709                   12/11/90
4,976,493                   07/385,514                   12/11/90
4,976,494                   07/385,725                   12/11/90
4,976,495                   07/390,831                   12/11/90
4,976,503                   07/385,507                   12/11/90
4,976,509                   07/452,574                   12/11/90
4,976,515                   07/283,416                   12/11/90
4,976,520                   07/246,557                   12/11/90
4,976,528                   07/311,860                   12/11/90
4,976,530                   07/325,141                   12/11/90
4,976,549                   07/350,815                   12/11/90
4,976,551                   07/463,507                   12/11/90
4,976,554                   07/257,876                   12/11/90
4,976,560                   07/192,129                   12/11/90
4,976,561                   07/287,616                   12/11/90
4,976,564                   07/449,274                   12/11/90
4,976,571                   07/505,367                   12/11/90
4,976,575                   07/180,468                   12/11/90
4,976,581                   07/265,902                   12/11/90
4,976,587                   07/221,897                   12/11/90
4,976,589                   07/339,132                   12/11/90
4,976,591                   07/487,308                   12/11/90
4,976,593                   07/334,577                   12/11/90
4,976,598                   07/331,375                   12/11/90
4,976,602                   07/254,659                   12/11/90
4,976,605                   07/356,871                   12/11/90
4,976,607                   06/883,711                   12/11/90
4,976,608                   07/462,090                   12/11/90
4,976,611                   07/416,389                   12/11/90
4,976,615                   07/417,592                   12/11/90
4,976,616                   07/229,242                   12/11/90
4,976,621                   07/290,758                   12/11/90
4,976,622                   07/422,591                   12/11/90
4,976,626                   07/287,236                   12/11/90
4,976,629                   07/417,169                   12/11/90
4,976,634                   07/401,356                   12/11/90
4,976,637                   07/375,038                   12/11/90
4,976,639                   07/225,260                   12/11/90
4,976,640                   07/351,855                   12/11/90
4,976,641                   07/491,031                   12/11/90
4,976,644                   07/431,246                   12/11/90
4,976,655                   07/399,858                   12/11/90
4,976,657                   07/377,150                   12/11/90
4,976,659                   07/317,008                   12/11/90
4,976,665                   07/366,734                   12/11/90
4,976,667                   07/282,716                   12/11/90
4,976,678                   07/359,080                   12/11/90
4,976,686                   07/246,344                   12/11/90
4,976,688                   07/306,509                   12/11/90
4,976,692                   07/411,987                   12/11/90
4,976,693                   07/450,528                   12/11/90
4,976,695                   07/213,092                   12/11/90
4,976,697                   07/427,422                   12/11/90
4,976,698                   07/111,584                   12/11/90
4,976,699                   07/356,241                   12/11/90
4,976,703                   07/310,617                   12/11/90
4,976,705                   07/366,134                   12/11/90
4,976,706                   07/366,135                   12/11/90
4,976,708                   07/366,731                   12/11/90
4,976,723                   07/384,708                   12/11/90
4,976,727                   07/450,244                   12/11/90
4,976,737                   07/493,206                   12/11/90
4,976,740                   07/380,141                   12/11/90
4,976,743                   07/331,902                   12/11/90
4,976,747                   07/419,880                   12/11/90
4,976,753                   07/401,804                   12/11/90
4,976,756                   07/464,801                   12/11/90
4,976,758                   07/407,414                   12/11/90
4,976,760                   07/404,833                   12/11/90
4,976,762                   07/426,864                   12/11/90
4,976,763                   07/495,593                   12/11/90
4,976,775                   07/318,203                   12/11/90
4,976,776                   07/323,922                   12/11/90
4,976,778                   07/210,579                   12/11/90
4,976,779                   07/427,582                   12/11/90
4,976,783                   07/276,891                   12/11/90
4,976,785                   07/309,894                   12/11/90
4,976,789                   07/456,899                   12/11/90
4,976,791                   07/469,740                   12/11/90
4,976,795                   07/533,178                   12/11/90
4,976,797                   07/430,172                   12/11/90
4,976,798                   07/464,319                   12/11/90
4,976,801                   07/463,799                   12/11/90
4,976,806                   07/057,522                   12/11/90
4,976,809                   07/452,860                   12/11/90
4,976,812                   07/449,100                   12/11/90
4,976,819                   07/187,660                   12/11/90
4,976,827                   06/837,807                   12/11/90
4,976,829                   07/422,522                   12/11/90
4,976,832                   07/433,867                   12/11/90
4,976,833                   07/417,649                   12/11/90
4,976,839                   07/383,511                   12/11/90
4,976,842                   07/345,891                   12/11/90
4,976,846                   07/305,166                   12/11/90
4,976,853                   07/305,436                   12/11/90
4,976,855                   07/339,185                   12/11/90
4,976,857                   07/347,153                   12/11/90
4,976,863                   07/301,463                   12/11/90
4,976,865                   07/112,312                   12/11/90
4,976,867                   07/333,410                   12/11/90
4,976,874                   07/353,830                   12/11/90
4,976,877                   07/408,180                   12/11/90
4,976,884                   07/409,066                   12/11/90
4,976,894                   07/411,567                   12/11/90
4,976,901                   07/477,363                   12/11/90
4,976,905                   07/430,572                   12/11/90
4,976,913                   07/342,125                   12/11/90
4,976,916                   07/357,270                   12/11/90
4,976,917                   07/517,843                   12/11/90
4,976,922                   07/318,767                   12/11/90
4,976,923                   07/351,456                   12/11/90
4,976,925                   07/295,061                   12/11/90
4,976,926                   07/225,023                   12/11/90
4,976,932                   07/056,218                   12/11/90
4,976,934                   06/948,210                   12/11/90
4,976,940                   07/388,714                   12/11/90
4,976,943                   07/351,054                   12/11/90
4,976,948                   07/416,754                   12/11/90
4,976,963                   07/415,949                   12/11/90
4,976,970                   07/315,339                   12/11/90
4,976,973                   07/207,270                   12/11/90
4,976,983                   07/348,627                   12/11/90
4,976,997                   07/507,141                   12/11/90
4,977,012                   07/164,339                   12/11/90
4,977,019                   07/337,838                   12/11/90
4,977,023                   07/221,843                   12/11/90
4,977,034                   07/432,897                   12/11/90
4,977,047                   07/317,661                   12/11/90
4,977,052                   07/481,798                   12/11/90
4,977,077                   07/185,218                   12/11/90
4,977,078                   07/136,822                   12/11/90
4,977,079                   07/134,229                   12/11/90
4,977,083                   07/179,930                   12/11/90
4,977,089                   07/010,245                   12/11/90
4,977,093                   07/224,711                   12/11/90
4,977,095                   07/330,655                   12/11/90
4,977,097                   07/390,986                   12/11/90
4,977,111                   07/389,542                   12/11/90
4,977,135                   07/380,127                   12/11/90
4,977,146                   07/505,712                   12/11/90
4,977,147                   07/280,803                   12/11/90
4,977,149                   07/514,631                   12/11/90
4,977,154                   06/918,568                   12/11/90
4,977,155                   07/369,762                   12/11/90
4,977,158                   07/397,228                   12/11/90
4,977,160                   07/311,904                   12/11/90
4,977,163                   07/183,293                   12/11/90
4,977,169                   07/352,085                   12/11/90
4,977,175                   07/450,748                   12/11/90
4,977,176                   07/336,279                   12/11/90
4,977,179                   07/341,234                   12/11/90
4,977,182                   07/336,983                   12/11/90
4,977,183                   07/406,404                   12/11/90
4,977,184                   07/250,666                   12/11/90
4,977,188                   07/449,606                   12/11/90
4,977,198                   07/171,498                   12/11/90
4,977,200                   07/330,576                   12/11/90
4,977,203                   07/222,828                   12/11/90
4,977,207                   07/154,732                   12/11/90
4,977,224                   07/437,701                   12/11/90
4,977,236                   07/449,289                   12/11/90
4,977,237                   07/442,863                   12/11/90
4,977,238                   07/443,851                   12/11/90
4,977,242                   07/323,821                   12/11/90
4,977,243                   07/291,013                   12/11/90
4,977,249                   07/449,139                   12/11/90
4,977,258                   07/414,222                   12/11/90
4,977,261                   07/141,762                   12/11/90
4,977,263                   07/412,975                   12/11/90
4,977,264                   07/433,134                   12/11/90
4,977,267                   07/301,856                   12/11/90
4,977,268                   07/179,555                   12/11/90
4,977,269                   07/443,283                   12/11/90
4,977,271                   07/418,319                   12/11/90
4,977,273                   07/448,909                   12/11/90
4,977,278                   07/404,754                   12/11/90
4,977,295                   07/386,059                   12/11/90
4,977,296                   07/313,874                   12/11/90
4,977,299                   07/371,790                   12/11/90
4,977,303                   07/206,136                   12/11/90
4,977,305                   07/332,684                   12/11/90
4,977,306                   07/423,337                   12/11/90
4,977,316                   07/411,691                   12/11/90
4,977,324                   07/344,196                   12/11/90
4,977,328                   07/485,209                   12/11/90
4,977,329                   07/197,237                   12/11/90
4,977,330                   07/311,547                   12/11/90
4,977,336                   07/328,378                   12/11/90
4,977,346                   07/414,640                   12/11/90
4,977,364                   07/335,289                   12/11/90
4,977,383                   07/421,360                   12/11/90
4,977,388                   07/291,496                   12/11/90
4,977,390                   07/423,872                   12/11/90
4,977,391                   07/452,039                   12/11/90
4,977,402                   07/261,813                   12/11/90
4,977,405                   07/469,971                   12/11/90
4,977,411                   07/432,012                   12/11/90
4,977,422                   07/329,818                   12/11/90
4,977,431                   07/258,585                   12/11/90
4,977,434                   07/225,165                   12/11/90
4,977,448                   07/285,525                   12/11/90
4,977,453                   07/252,247                   12/11/90
4,977,454                   07/239,096                   12/11/90
4,977,463                   07/352,407                   12/11/90
4,977,465                   06/738,806                   12/11/90
4,977,480                   07/406,960                   12/11/90
4,977,490                   07/315,598                   12/11/90
4,977,494                   07/312,105                   12/11/90
4,977,501                   07/310,267                   12/11/90
4,977,509                   07/357,843                   12/11/90
4,977,524                   07/293,014                   12/11/90
4,977,527                   07/181,644                   12/11/90
4,977,548                   07/513,398                   12/11/90
4,977,552                   07/232,319                   12/11/90
4,977,555                   07/297,822                   12/11/90
4,977,559                   07/286,195                   12/11/90
4,977,571                   07/174,729                   12/11/90
4,977,572                   07/501,210                   12/11/90
4,977,579                   06/620,659                   12/11/90
4,977,581                   07/233,396                   12/11/90
4,977,586                   07/365,135                   12/11/90
4,977,602                   07/439,222                   12/11/90
4,977,605                   07/207,051                   12/11/90
4,977,606                   07/344,562                   12/11/90
4,977,618                   07/184,261                   12/11/90

                  PATENTS WHICH EXPIRED ON December 13, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,371,903                   08/021,151                   12/13/94
5,371,905                   08/114,483                   12/13/94
5,371,906                   08/110,895                   12/13/94
5,371,907                   08/051,988                   12/13/94
5,371,914                   08/150,233                   12/13/94
5,371,917                   08/115,527                   12/13/94
5,371,921                   08/042,696                   12/13/94
5,371,922                   08/107,086                   12/13/94
5,371,924                   08/003,247                   12/13/94
5,371,925                   08/051,216                   12/13/94
5,371,931                   07/941,964                   12/13/94
5,371,932                   08/137,430                   12/13/94
5,371,936                   08/108,430                   12/13/94
5,371,937                   08/191,152                   12/13/94
5,371,941                   08/154,778                   12/13/94
5,371,944                   08/126,008                   12/13/94
5,371,947                   08/226,932                   12/13/94
5,371,949                   08/103,719                   12/13/94
5,371,952                   08/012,320                   12/13/94
5,371,953                   08/066,728                   12/13/94
5,371,960                   07/970,620                   12/13/94
5,371,962                   08/138,730                   12/13/94
5,371,964                   07/973,773                   12/13/94
5,371,968                   08/106,582                   12/13/94
5,371,970                   08/027,648                   12/13/94
5,371,974                   08/136,954                   12/13/94
5,371,975                   07/949,250                   12/13/94
5,371,977                   08/107,941                   12/13/94
5,371,985                   08/042,748                   12/13/94
5,371,991                   07/129,536                   12/13/94
5,371,994                   08/100,262                   12/13/94
5,371,997                   08/070,234                   12/13/94
5,372,000                   08/056,749                   12/13/94
5,372,003                   08/167,127                   12/13/94
5,372,006                   08/014,550                   12/13/94
5,372,009                   08/149,495                   12/13/94
5,372,013                   08/096,185                   12/13/94
5,372,015                   07/907,538                   12/13/94
5,372,017                   07/890,011                   12/13/94
5,372,018                   08/123,567                   12/13/94
5,372,019                   08/125,857                   12/13/94
5,372,023                   08/106,622                   12/13/94
5,372,029                   07/764,326                   12/13/94
5,372,037                   07/996,960                   12/13/94
5,372,056                   07/973,977                   12/13/94
5,372,058                   08/096,244                   12/13/94
5,372,061                   08/046,636                   12/13/94
5,372,063                   08/025,124                   12/13/94
5,372,074                   07/906,356                   12/13/94
5,372,075                   07/924,051                   12/13/94
5,372,080                   08/035,176                   12/13/94
5,372,091                   08/073,908                   12/13/94
5,372,092                   08/131,340                   12/13/94
5,372,094                   08/149,731                   12/13/94
5,372,095                   08/149,240                   12/13/94
5,372,098                   08/097,750                   12/13/94
5,372,100                   08/041,154                   12/13/94
5,372,104                   08/133,975                   12/13/94
5,372,106                   08/171,333                   12/13/94
5,372,107                   07/946,468                   12/13/94
5,372,128                   08/047,123                   12/13/94
5,372,131                   07/875,741                   12/13/94
5,372,132                   07/911,977                   12/13/94
5,372,134                   08/066,790                   12/13/94
5,372,140                   08/039,122                   12/13/94
5,372,150                   07/772,771                   12/13/94
5,372,153                   08/031,667                   12/13/94
5,372,156                   08/118,994                   12/13/94
5,372,161                   07/835,102                   12/13/94
5,372,164                   08/172,342                   12/13/94
5,372,174                   08/053,645                   12/13/94
5,372,191                   07/949,838                   12/13/94
5,372,192                   08/060,012                   12/13/94
5,372,195                   08/119,551                   12/13/94
5,372,200                   07/990,563                   12/13/94
5,372,209                   08/073,739                   12/13/94
5,372,212                   08/240,966                   12/13/94
5,372,218                   08/154,090                   12/13/94
5,372,220                   08/021,396                   12/13/94
5,372,224                   08/014,350                   12/13/94
5,372,225                   08/179,132                   12/13/94
5,372,237                   08/109,258                   12/13/94
5,372,250                   07/980,658                   12/13/94
5,372,252                   08/116,616                   12/13/94
5,372,256                   08/242,380                   12/13/94
5,372,258                   07/959,647                   12/13/94
5,372,263                   07/959,973                   12/13/94
5,372,265                   08/067,448                   12/13/94
5,372,268                   07/865,691                   12/13/94
5,372,272                   08/022,284                   12/13/94
5,372,273                   08/184,571                   12/13/94
5,372,274                   07/979,324                   12/13/94
5,372,276                   08/051,974                   12/13/94
5,372,287                   08/192,733                   12/13/94
5,372,291                   07/954,536                   12/13/94
5,372,293                   08/155,762                   12/13/94
5,372,304                   08/158,207                   12/13/94
5,372,311                   08/101,912                   12/13/94
5,372,318                   08/073,794                   12/13/94
5,372,323                   08/004,246                   12/13/94
5,372,345                   08/078,610                   12/13/94
5,372,351                   08/185,891                   12/13/94
5,372,354                   08/098,110                   12/13/94
5,372,374                   08/098,795                   12/13/94
5,372,378                   07/970,096                   12/13/94
5,372,379                   08/196,553                   12/13/94
5,372,383                   07/640,376                   12/13/94
5,372,384                   08/203,360                   12/13/94
5,372,385                   07/965,002                   12/13/94
5,372,387                   07/990,725                   12/13/94
5,372,393                   07/930,154                   12/13/94
5,372,401                   08/132,153                   12/13/94
5,372,402                   08/160,421                   12/13/94
5,372,414                   07/981,830                   12/13/94
5,372,417                   08/129,945                   12/13/94
5,372,425                   08/128,364                   12/13/94
5,372,427                   07/812,232                   12/13/94
5,372,432                   08/092,431                   12/13/94
5,372,438                   08/031,699                   12/13/94
5,372,440                   08/017,910                   12/13/94
5,372,442                   08/118,250                   12/13/94
5,372,449                   07/836,298                   12/13/94
5,372,450                   07/997,016                   12/13/94
5,372,453                   08/018,072                   12/13/94
5,372,454                   07/945,318                   12/13/94
5,372,455                   08/064,178                   12/13/94
5,372,461                   08/025,424                   12/13/94
5,372,467                   08/227,186                   12/13/94
5,372,468                   08/064,065                   12/13/94
5,372,474                   08/133,576                   12/13/94
5,372,476                   08/080,670                   12/13/94
5,372,480                   08/124,795                   12/13/94
5,372,483                   08/223,431                   12/13/94
5,372,491                   08/135,134                   12/13/94
5,372,494                   08/186,081                   12/13/94
5,372,505                   07/825,633                   12/13/94
5,372,506                   08/147,735                   12/13/94
5,372,507                   08/016,809                   12/13/94
5,372,511                   07/979,921                   12/13/94
5,372,515                   08/074,401                   12/13/94
5,372,518                   08/123,241                   12/13/94
5,372,522                   07/993,697                   12/13/94
5,372,527                   08/006,491                   12/13/94
5,372,537                   07/903,706                   12/13/94
5,372,538                   08/050,601                   12/13/94
5,372,542                   08/089,765                   12/13/94
5,372,546                   08/044,748                   12/13/94
5,372,553                   08/052,930                   12/13/94
5,372,556                   08/081,549                   12/13/94
5,372,558                   08/142,619                   12/13/94
5,372,560                   08/156,733                   12/13/94
5,372,562                   08/175,511                   12/13/94
5,372,563                   08/173,595                   12/13/94
5,372,567                   08/023,682                   12/13/94
5,372,572                   07/675,906                   12/13/94
5,372,582                   07/842,138                   12/13/94
5,372,583                   07/981,794                   12/13/94
5,372,586                   08/139,586                   12/13/94
5,372,588                   07/981,173                   12/13/94
5,372,589                   08/157,669                   12/13/94
5,372,590                   08/105,654                   12/13/94
5,372,591                   08/154,453                   12/13/94
5,372,597                   08/060,855                   12/13/94
5,372,598                   07/883,808                   12/13/94
5,372,608                   08/105,917                   12/13/94
5,372,609                   08/094,026                   12/13/94
5,372,614                   08/038,977                   12/13/94
5,372,619                   07/960,811                   12/13/94
5,372,621                   08/076,016                   12/13/94
5,372,642                   08/072,564                   12/13/94
5,372,645                   08/153,064                   12/13/94
5,372,666                   08/222,503                   12/13/94
5,372,678                   07/839,809                   12/13/94
5,372,680                   08/030,196                   12/13/94
5,372,683                   07/796,753                   12/13/94
5,372,691                   07/893,371                   12/13/94
5,372,696                   08/093,784                   12/13/94
5,372,700                   08/029,244                   12/13/94
5,372,704                   07/859,756                   12/13/94
5,372,707                   08/047,911                   12/13/94
5,372,709                   08/070,635                   12/13/94
5,372,723                   08/081,538                   12/13/94
5,372,724                   08/129,989                   12/13/94
5,372,727                   07/960,461                   12/13/94
5,372,729                   07/992,118                   12/13/94
5,372,748                   08/043,866                   12/13/94
5,372,756                   08/061,021                   12/13/94
5,372,771                   08/092,368                   12/13/94
5,372,784                   08/212,674                   12/13/94
5,372,787                   08/120,000                   12/13/94
5,372,789                   08/138,785                   12/13/94
5,372,790                   08/107,263                   12/13/94
5,372,798                   08/207,645                   12/13/94
5,372,820                   07/961,033                   12/13/94
5,372,835                   08/019,130                   12/13/94
5,372,858                   08/157,967                   12/13/94
5,372,863                   08/055,957                   12/13/94
5,372,878                   07/921,847                   12/13/94
5,372,881                   07/897,188                   12/13/94
5,372,892                   08/063,899                   12/13/94
5,372,894                   07/752,359                   12/13/94
5,372,900                   08/038,976                   12/13/94
5,372,918                   07/321,016                   12/13/94
5,372,935                   08/084,858                   12/13/94
5,372,947                   07/961,329                   12/13/94
5,372,949                   07/939,804                   12/13/94
5,372,979                   08/146,976                   12/13/94
5,372,986                   08/061,523                   12/13/94
5,372,989                   07/934,467                   12/13/94
5,372,993                   08/074,905                   12/13/94
5,373,012                   08/059,552                   12/13/94
5,373,015                   07/960,659                   12/13/94
5,373,019                   07/640,445                   12/13/94
5,373,028                   08/137,309                   12/13/94
5,373,030                   08/085,229                   12/13/94
5,373,032                   08/108,212                   12/13/94
5,373,038                   08/049,437                   12/13/94
5,373,045                   08/181,637                   12/13/94
5,373,047                   07/994,137                   12/13/94
5,373,049                   07/708,863                   12/13/94
5,373,052                   07/992,749                   12/13/94
5,373,060                   08/085,907                   12/13/94
5,373,062                   08/055,125                   12/13/94
5,373,067                   07/955,753                   12/13/94
5,373,074                   08/017,155                   12/13/94
5,373,085                   07/951,788                   12/13/94
5,373,087                   08/148,723                   12/13/94
5,373,099                   08/008,988                   12/13/94
5,373,102                   08/108,274                   12/13/94
5,373,107                   07/975,233                   12/13/94
5,373,125                   08/035,774                   12/13/94
5,373,135                   07/679,090                   12/13/94
5,373,138                   08/111,166                   12/13/94
5,373,147                   08/122,839                   12/13/94
5,373,148                   07/943,232                   12/13/94
5,373,161                   08/186,588                   12/13/94
5,373,165                   08/085,928                   12/13/94
5,373,186                   08/236,726                   12/13/94
5,373,198                   08/061,818                   12/13/94
5,373,214                   07/897,823                   12/13/94
5,373,237                   08/071,439                   12/13/94
5,373,273                   08/121,879                   12/13/94
5,373,274                   08/110,542                   12/13/94
5,373,277                   07/922,495                   12/13/94
5,373,278                   08/090,019                   12/13/94
5,373,287                   07/977,623                   12/13/94
5,373,304                   08/068,926                   12/13/94
5,373,309                   07/985,023                   12/13/94
5,373,318                   08/094,663                   12/13/94
5,373,327                   08/023,248                   12/13/94
5,373,331                   08/012,766                   12/13/94
5,373,358                   08/155,510                   12/13/94
5,373,380                   08/047,815                   12/13/94
5,373,393                   08/069,501                   12/13/94
5,373,395                   08/058,205                   12/13/94
5,373,396                   08/011,551                   12/13/94
5,373,409                   08/036,250                   12/13/94
5,373,412                   07/945,069                   12/13/94
5,373,413                   07/594,490                   12/13/94
5,373,422                   08/014,655                   12/13/94
5,373,423                   08/069,930                   12/13/94
5,373,425                   07/986,018                   12/13/94
5,373,426                   08/125,761                   12/13/94
5,373,427                   08/119,918                   12/13/94
5,373,428                   08/007,414                   12/13/94
5,373,443                   08/132,408                   12/13/94
5,373,444                   08/115,254                   12/13/94
5,373,449                   07/683,720                   12/13/94
5,373,460                   08/029,629                   12/13/94
5,373,462                   08/017,750                   12/13/94
5,373,466                   07/858,310                   12/13/94
5,373,468                   08/188,771                   12/13/94
5,373,478                   08/063,014                   12/13/94
5,373,503                   08/056,223                   12/13/94
5,373,505                   08/082,495                   12/13/94
5,373,539                   08/183,393                   12/13/94
5,373,543                   08/070,202                   12/13/94
5,373,564                   07/955,459                   12/13/94
5,373,569                   08/061,446                   12/13/94
5,373,581                   08/155,383                   12/13/94