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 September 20, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                      Application                     Issue
Number                         Number                        Date

4,771,486                   07/129067                    09/20/88
4,771,503                   06/617765                    09/20/88
4,771,510                   07/021395                    09/20/88
4,771,516                   07/081545                    09/20/88
4,771,517                   07/070345                    09/20/88
4,771,532                   07/148923                    09/20/88
4,771,540                   06/775141                    09/20/88
4,771,542                   06/909003                    09/20/88
4,771,550                   06/549232                    09/20/88
4,771,567                   07/128626                    09/20/88
4,771,570                   06/947374                    09/20/88
4,771,578                   07/040535                    09/20/88
4,771,590                   06/826483                    09/20/88
4,771,597                   07/110940                    09/20/88
4,771,601                   07/056568                    09/20/88
4,771,603                   07/040768                    09/20/88
4,771,604                   06/634624                    09/20/88
4,771,610                   07/057033                    09/20/88
4,771,620                   07/136562                    09/20/88
4,771,621                   06/889083                    09/20/88
4,771,622                   06/839037                    09/20/88
4,771,625                   06/947268                    09/20/88
4,771,626                   07/025806                    09/20/88
4,771,629                   07/024297                    09/20/88
4,771,630                   07/010097                    09/20/88
4,771,638                   07/154648                    09/20/88
4,771,639                   07/092151                    09/20/88
4,771,642                   07/076247                    09/20/88
4,771,650                   07/065876                    09/20/88
4,771,652                   06/944440                    09/20/88
4,771,653                   06/923833                    09/20/88
4,771,655                   07/019052                    09/20/88
4,771,658                   06/900216                    09/20/88
4,771,664                   06/937338                    09/20/88
4,771,674                   06/905524                    09/20/88
4,771,680                   07/081188                    09/20/88
4,771,683                   07/086648                    09/20/88
4,771,691                   06/867357                    09/20/88
4,771,698                   06/933929                    09/20/88
4,771,707                   06/587666                    09/20/88
4,771,711                   07/081994                    09/20/88
4,771,720                   06/905377                    09/20/88
4,771,735                   07/091177                    09/20/88
4,771,736                   06/892574                    09/20/88
4,771,748                   07/101226                    09/20/88
4,771,754                   07/116919                    09/20/88
4,771,755                   07/005644                    09/20/88
4,771,764                   06/597643                    09/20/88
4,771,766                   07/064224                    09/20/88
4,771,785                   06/890602                    09/20/88
4,771,787                   06/940445                    09/20/88
4,771,792                   06/930366                    09/20/88
4,771,797                   07/077990                    09/20/88
4,771,803                   07/101187                    09/20/88
4,771,809                   07/052636                    09/20/88
4,771,811                   07/031882                    09/20/88
4,771,817                   07/015899                    09/20/88
4,771,822                   07/050078                    09/20/88
4,771,827                   07/041500                    09/20/88
4,771,829                   07/139328                    09/20/88
4,771,834                   07/005436                    09/20/88
4,771,837                   07/050321                    09/20/88
4,771,838                   07/053146                    09/20/88
4,771,841                   07/102412                    09/20/88
4,771,847                   06/925253                    09/20/88
4,771,848                   06/942438                    09/20/88
4,771,856                   07/053983                    09/20/88
4,771,857                   06/816391                    09/20/88
4,771,873                   06/942632                    09/20/88
4,771,878                   06/522946                    09/20/88
4,771,880                   06/839944                    09/20/88
4,771,883                   07/143897                    09/20/88
4,771,884                   07/051417                    09/20/88
4,771,898                   07/095411                    09/20/88
4,771,901                   07/004326                    09/20/88
4,771,908                   07/023016                    09/20/88
4,771,914                   07/109240                    09/20/88
4,771,920                   06/792673                    09/20/88
4,771,922                   06/909342                    09/20/88
4,771,928                   06/861431                    09/20/88
4,771,929                   07/017327                    09/20/88
4,771,930                   06/879939                    09/20/88
4,771,932                   07/095637                    09/20/88
4,771,935                   07/057148                    09/20/88
4,771,953                   07/015681                    09/20/88
4,771,954                   07/104384                    09/20/88
4,771,956                   06/888430                    09/20/88
4,771,965                   07/065439                    09/20/88
4,771,970                   07/026159                    09/20/88
4,771,979                   07/052554                    09/20/88
4,771,997                   07/041398                    09/20/88
4,772,003                   07/018341                    09/20/88
4,772,028                   07/090015                    09/20/88
4,772,036                   07/035646                    09/20/88
4,772,041                   07/017265                    09/20/88
4,772,047                   06/936631                    09/20/88
4,772,054                   07/131501                    09/20/88
4,772,061                   07/016290                    09/20/88
4,772,067                   07/134215                    09/20/88
4,772,081                   06/907086                    09/20/88
4,772,111                   07/031597                    09/20/88
4,772,114                   06/881699                    09/20/88
4,772,116                   07/122602                    09/20/88
4,772,120                   06/883941                    09/20/88
4,772,122                   06/897478                    09/20/88
4,772,125                   06/875974                    09/20/88
4,772,130                   06/869103                    09/20/88
4,772,131                   07/031757                    09/20/88
4,772,147                   06/927288                    09/20/88
4,772,164                   06/901252                    09/20/88
4,772,165                   06/919063                    09/20/88
4,772,173                   06/834948                    09/20/88
4,772,181                   06/910506                    09/20/88
4,772,185                   06/934663                    09/20/88
4,772,187                   06/905010                    09/20/88
4,772,191                   06/902145                    09/20/88
4,772,195                   07/004135                    09/20/88
4,772,196                   06/948223                    09/20/88
4,772,197                   07/025509                    09/20/88
4,772,206                   06/838083                    09/20/88
4,772,212                   07/052519                    09/20/88
4,772,222                   07/109350                    09/20/88
4,772,223                   07/104417                    09/20/88
4,772,225                   07/122961                    09/20/88
4,772,226                   07/094687                    09/20/88
4,772,229                   06/635771                    09/20/88
4,772,234                   07/079370                    09/20/88
4,772,247                   06/906001                    09/20/88
4,772,254                   06/937264                    09/20/88
4,772,274                   07/037168                    09/20/88
4,772,279                   07/001733                    09/20/88
4,772,281                   06/922955                    09/20/88
4,772,285                   06/925464                    09/20/88
4,772,291                   06/862069                    09/20/88
4,772,294                   07/127559                    09/20/88
4,772,299                   06/903587                    09/20/88
4,772,304                   06/866027                    09/20/88
4,772,324                   06/865153                    09/20/88
4,772,331                   06/922901                    09/20/88
4,772,333                   07/031373                    09/20/88
4,772,338                   06/921523                    09/20/88
4,772,339                   07/010800                    09/20/88
4,772,340                   07/145717                    09/20/88
4,772,342                   06/922680                    09/20/88
4,772,343                   06/880962                    09/20/88
4,772,346                   07/115568                    09/20/88
4,772,350                   06/908655                    09/20/88
4,772,351                   07/105096                    09/20/88
4,772,359                   07/055354                    09/20/88
4,772,367                   07/047653                    09/20/88
4,772,385                   06/668521                    09/20/88
4,772,393                   07/081534                    09/20/88
4,772,401                   06/899071                    09/20/88
4,772,412                   06/910547                    09/20/88
4,772,416                   07/028690                    09/20/88
4,772,417                   06/684680                    09/20/88
4,772,420                   07/072522                    09/20/88
4,772,437                   06/907957                    09/20/88
4,772,449                   07/058829                    09/20/88
4,772,453                   06/707496                    09/20/88
4,772,478                   06/833965                    09/20/88
4,772,480                   06/867500                    09/20/88
4,772,484                   07/063583                    09/20/88
4,772,491                   07/084773                    09/20/88
4,772,499                   06/913900                    09/20/88
4,772,513                   07/116539                    09/20/88
4,772,514                   07/019039                    09/20/88
4,772,521                   07/130600                    09/20/88
4,772,522                   07/006432                    09/20/88
4,772,533                   06/927776                    09/20/88
4,772,538                   06/762090                    09/20/88
4,772,539                   07/029110                    09/20/88
4,772,542                   07/097283                    09/20/88
4,772,557                   06/797262                    09/20/88
4,772,558                   07/056517                    09/20/88
4,772,562                   07/106212                    09/20/88
4,772,578                   07/053923                    09/20/88
4,772,584                   06/867795                    09/20/88
4,772,585                   06/782441                    09/20/88
4,772,587                   06/852709                    09/20/88
4,772,590                   06/880633                    09/20/88
4,772,592                   06/892612                    09/20/88
4,772,593                   06/750615                    09/20/88
4,772,594                   07/026530                    09/20/88
4,772,599                   07/025614                    09/20/88
4,772,602                   06/839621                    09/20/88
4,772,611                   07/043656                    09/20/88
4,772,612                   06/870042                    09/20/88
4,772,614                   06/874217                    09/20/88
4,772,616                   07/094968                    09/20/88
4,772,622                   06/874757                    09/20/88
4,772,627                   07/003612                    09/20/88
4,772,630                   06/799372                    09/20/88
4,772,635                   06/934877                    09/20/88
4,772,639                   07/142759                    09/20/88
4,772,640                   07/142033                    09/20/88
4,772,642                   07/039791                    09/20/88
4,772,652                   07/053156                    09/20/88
4,772,653                   07/098536                    09/20/88
4,772,655                   07/056577                    09/20/88
4,772,658                   07/121185                    09/20/88
4,772,661                   06/934801                    09/20/88
4,772,672                   07/047392                    09/20/88
4,772,682                   06/944229                    09/20/88
4,772,695                   06/533630                    09/20/88
4,772,696                   06/942162                    09/20/88
4,772,697                   06/898559                    09/20/88
4,772,698                   07/065886                    09/20/88
4,772,706                   06/818450                    09/20/88
4,772,707                   06/868392                    09/20/88
4,772,708                   07/028039                    09/20/88
4,772,711                   06/898139                    09/20/88
4,772,714                   06/883808                    09/20/88
4,772,727                   07/082567                    09/20/88
4,772,731                   06/927476                    09/20/88
4,772,738                   06/940836                    09/20/88
4,772,739                   06/879501                    09/20/88
4,772,742                   07/085807                    09/20/88
4,772,744                   07/048519                    09/20/88
4,772,750                   06/914960                    09/20/88
4,772,757                   06/921641                    09/20/88
4,772,762                   06/939815                    09/20/88
4,772,771                   06/865476                    09/20/88
4,772,780                   07/027606                    09/20/88
4,772,788                   06/872582                    09/20/88
4,772,793                   07/104029                    09/20/88
4,772,806                   07/045031                    09/20/88
4,772,813                   07/047567                    09/20/88
4,772,817                   07/056659                    09/20/88
4,772,829                   07/052303                    09/20/88
4,772,838                   07/075711                    09/20/88
4,772,852                   06/927579                    09/20/88
4,772,853                   07/084661                    09/20/88
4,772,855                   07/146762                    09/20/88
4,772,871                   07/046783                    09/20/88
4,772,875                   06/864032                    09/20/88
4,772,880                   06/821018                    09/20/88
4,772,884                   06/787541                    09/20/88
4,772,888                   06/898667                    09/20/88
4,772,890                   06/708587                    09/20/88
4,772,901                   07/078027                    09/20/88
4,772,903                   07/143788                    09/20/88
4,772,907                   07/027821                    09/20/88
4,772,918                   06/750938                    09/20/88
4,772,920                   06/945996                    09/20/88
4,772,929                   07/002059                    09/20/88
4,772,931                   06/883187                    09/20/88
4,772,942                   07/001203                    09/20/88
4,772,948                   07/113590                    09/20/88
4,772,951                   07/031844                    09/20/88
4,772,952                   06/935905                    09/20/88
4,772,962                   06/919218                    09/20/88
4,772,964                   06/932021                    09/20/88
4,772,972                   07/013138                    09/20/88
4,772,976                   06/768965                    09/20/88
4,772,984                   07/047340                    09/20/88
4,772,997                   07/069269                    09/20/88
4,773,005                   07/098759                    09/20/88
4,773,014                   06/946825                    09/20/88
4,773,019                   06/855824                    09/20/88
4,773,037                   07/017384                    09/20/88
4,773,038                   06/832913                    09/20/88
4,773,039                   06/799661                    09/20/88
4,773,050                   07/106422                    09/20/88
4,773,052                   06/778098                    09/20/88
4,773,059                   07/142318                    09/20/88
4,773,061                   06/923509                    09/20/88
4,773,069                   06/890827                    09/20/88
4,773,071                   06/914440                    09/20/88
4,773,076                   06/878423                    09/20/88
4,773,083                   06/796342                    09/20/88
4,773,097                   07/040770                    09/20/88

                  PATENTS WHICH EXPIRED ON September 15, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,146,622                   07/718545                    09/15/92
5,146,626                   07/658524                    09/15/92
5,146,629                   07/741316                    09/15/92
5,146,630                   07/680093                    09/15/92
5,146,634                   07/757639                    09/15/92
5,146,636                   07/687922                    09/15/92
5,146,637                   07/645209                    09/15/92
5,146,644                   07/727864                    09/15/92
5,146,645                   07/663214                    09/15/92
5,146,646                   07/482258                    09/15/92
5,146,648                   07/582752                    09/15/92
5,146,650                   07/708401                    09/15/92
5,146,655                   07/783914                    09/15/92
5,146,656                   07/724831                    09/15/92
5,146,665                   07/704062                    09/15/92
5,146,670                   07/543406                    09/15/92
5,146,674                   07/724245                    09/15/92
5,146,681                   07/510194                    09/15/92
5,146,690                   07/687571                    09/15/92
5,146,691                   07/660048                    09/15/92
5,146,693                   07/617888                    09/15/92
5,146,694                   07/591884                    09/15/92
5,146,695                   07/616434                    09/15/92
5,146,703                   07/648911                    09/15/92
5,146,704                   07/678758                    09/15/92
5,146,710                   07/658782                    09/15/92
5,146,719                   07/654201                    09/15/92
5,146,721                   07/723888                    09/15/92
5,146,724                   07/680133                    09/15/92
5,146,728                   07/623608                    09/15/92
5,146,733                   07/664834                    09/15/92
5,146,737                   07/710771                    09/15/92
5,146,744                   07/669110                    09/15/92
5,146,746                   07/807765                    09/15/92
5,146,750                   07/691003                    09/15/92
5,146,752                   07/623674                    09/15/92
5,146,754                   07/652652                    09/15/92
5,146,757                   07/717280                    09/15/92
5,146,760                   07/716183                    09/15/92
5,146,761                   07/716184                    09/15/92
5,146,762                   07/795496                    09/15/92
5,146,763                   07/806957                    09/15/92
5,146,773                   07/732864                    09/15/92
5,146,778                   07/634024                    09/15/92
5,146,785                   07/647751                    09/15/92
5,146,791                   07/622940                    09/15/92
5,146,796                   07/663143                    09/15/92
5,146,806                   07/578786                    09/15/92
5,146,810                   07/740334                    09/15/92
5,146,813                   07/746354                    09/15/92
5,146,819                   07/727584                    09/15/92
5,146,823                   07/787555                    09/15/92
5,146,826                   07/627096                    09/15/92
5,146,837                   07/788045                    09/15/92
5,146,839                   07/650556                    09/15/92
5,146,841                   07/850042                    09/15/92
5,146,842                   07/825964                    09/15/92
5,146,848                   07/648122                    09/15/92
5,146,849                   07/583247                    09/15/92
5,146,850                   07/699900                    09/15/92
5,146,851                   07/733007                    09/15/92
5,146,854                   07/699141                    09/15/92
5,146,855                   07/646752                    09/15/92
5,146,859                   07/718012                    09/15/92
5,146,864                   07/686105                    09/15/92
5,146,867                   07/777038                    09/15/92
5,146,875                   07/772319                    09/15/92
5,146,888                   07/718672                    09/15/92
5,146,891                   07/625998                    09/15/92
5,146,903                   07/781311                    09/15/92
5,146,908                   07/496858                    09/15/92
5,146,909                   07/635034                    09/15/92
5,146,910                   07/732502                    09/15/92
5,146,913                   07/663608                    09/15/92
5,146,925                   07/616941                    09/15/92
5,146,936                   07/558652                    09/15/92
5,146,946                   07/708940                    09/15/92
5,146,951                   07/765021                    09/15/92
5,146,953                   07/723774                    09/15/92
5,146,954                   07/714843                    09/15/92
5,146,957                   07/830686                    09/15/92
5,146,959                   07/790820                    09/15/92
5,146,964                   07/787224                    09/15/92
5,146,971                   07/491354                    09/15/92
5,146,974                   07/591611                    09/15/92
5,146,975                   07/706968                    09/15/92
5,146,976                   07/585097                    09/15/92
5,146,977                   07/732592                    09/15/92
5,146,980                   07/630254                    09/15/92
5,146,990                   07/693870                    09/15/92
5,146,996                   07/641849                    09/15/92
5,147,004                   07/638242                    09/15/92
5,147,005                   07/507504                    09/15/92
5,147,008                   07/425598                    09/15/92
5,147,009                   07/692305                    09/15/92
5,147,013                   07/605565                    09/15/92
5,147,014                   07/727841                    09/15/92
5,147,016                   07/741659                    09/15/92
5,147,018                   07/845497                    09/15/92
5,147,019                   07/603591                    09/15/92
5,147,029                   07/593864                    09/15/92
5,147,031                   07/683249                    09/15/92
5,147,035                   07/686903                    09/15/92
5,147,044                   07/699739                    09/15/92
5,147,046                   07/559307                    09/15/92
5,147,047                   07/640770                    09/15/92
5,147,049                   07/727905                    09/15/92
5,147,050                   07/722133                    09/15/92
5,147,054                   07/702897                    09/15/92
5,147,055                   07/755013                    09/15/92
5,147,059                   07/754863                    09/15/92
5,147,061                   07/730852                    09/15/92
5,147,064                   07/726805                    09/15/92
5,147,066                   07/746897                    09/15/92
5,147,067                   07/801382                    09/15/92
5,147,068                   07/641885                    09/15/92
5,147,069                   07/417968                    09/15/92
5,147,076                   07/668000                    09/15/92
5,147,081                   07/757020                    09/15/92
5,147,094                   07/539224                    09/15/92
5,147,098                   07/800022                    09/15/92
5,147,104                   07/745944                    09/15/92
5,147,108                   07/600181                    09/15/92
5,147,109                   07/772104                    09/15/92
5,147,112                   07/736794                    09/15/92
5,147,119                   07/544963                    09/15/92
5,147,120                   07/569608                    09/15/92
5,147,121                   07/662296                    09/15/92
5,147,125                   07/398136                    09/15/92
5,147,129                   07/748655                    09/15/92
5,147,133                   07/656204                    09/15/92
5,147,137                   07/643320                    09/15/92
5,147,146                   07/673720                    09/15/92
5,147,151                   07/748971                    09/15/92
5,147,157                   07/741386                    09/15/92
5,147,159                   07/633725                    09/15/92
5,147,160                   07/608466                    09/15/92
5,147,161                   07/784165                    09/15/92
5,147,162                   07/837885                    09/15/92
5,147,163                   07/394730                    09/15/92
5,147,166                   07/601308                    09/15/92
5,147,173                   07/709452                    09/15/92
5,147,191                   07/652802                    09/15/92
5,147,194                   07/796050                    09/15/92
5,147,208                   07/722957                    09/15/92
5,147,214                   07/766876                    09/15/92
5,147,215                   07/739781                    09/15/92
5,147,222                   07/816794                    09/15/92
5,147,223                   07/863523                    09/15/92
5,147,224                   07/707058                    09/15/92
5,147,225                   07/645864                    09/15/92
5,147,226                   07/645863                    09/15/92
5,147,228                   07/859277                    09/15/92
5,147,230                   07/810057                    09/15/92
5,147,233                   07/740292                    09/15/92
5,147,236                   07/726986                    09/15/92
5,147,254                   07/526297                    09/15/92
5,147,257                   07/577101                    09/15/92
5,147,283                   07/376052                    09/15/92
5,147,304                   07/690776                    09/15/92
5,147,307                   07/716823                    09/15/92
5,147,310                   07/753920                    09/15/92
5,147,314                   07/793861                    09/15/92
5,147,317                   07/532381                    09/15/92
5,147,319                   07/714956                    09/15/92
5,147,323                   07/667319                    09/15/92
5,147,334                   07/636739                    09/15/92
5,147,337                   07/734173                    09/15/92
5,147,340                   07/686397                    09/15/92
5,147,341                   07/664873                    09/15/92
5,147,342                   07/616428                    09/15/92
5,147,348                   07/569516                    09/15/92
5,147,349                   07/254994                    09/15/92
5,147,357                   07/670955                    09/15/92
5,147,364                   07/486815                    09/15/92
5,147,366                   07/487342                    09/15/92
5,147,368                   07/680888                    09/15/92
5,147,375                   07/708759                    09/15/92
5,147,376                   07/695000                    09/15/92
5,147,379                   07/617672                    09/15/92
5,147,389                   07/793236                    09/15/92
5,147,392                   07/434571                    09/15/92
5,147,407                   07/776122                    09/15/92
5,147,411                   07/667720                    09/15/92
5,147,414                   07/389436                    09/15/92
5,147,419                   07/555957                    09/15/92
5,147,424                   07/722831                    09/15/92
5,147,426                   07/656418                    09/15/92
5,147,431                   07/713477                    09/15/92
5,147,440                   07/713073                    09/15/92
5,147,444                   07/701630                    09/15/92
5,147,449                   07/336664                    09/15/92
5,147,450                   07/736195                    09/15/92
5,147,453                   07/811902                    09/15/92
5,147,454                   07/466528                    09/15/92
5,147,455                   07/705644                    09/15/92
5,147,457                   07/597302                    09/15/92
5,147,467                   07/687961                    09/15/92
5,147,470                   07/671379                    09/15/92
5,147,479                   07/634734                    09/15/92
5,147,484                   07/683397                    09/15/92
5,147,492                   07/658783                    09/15/92
5,147,494                   07/558444                    09/15/92
5,147,495                   07/620907                    09/15/92
5,147,499                   07/735127                    09/15/92
5,147,505                   07/705219                    09/15/92
5,147,512                   07/723043                    09/15/92
5,147,523                   07/712410                    09/15/92
5,147,525                   07/179341                    09/15/92
5,147,534                   07/560436                    09/15/92
5,147,546                   07/708904                    09/15/92
5,147,547                   07/800353                    09/15/92
5,147,548                   07/745036                    09/15/92
5,147,549                   07/733519                    09/15/92
5,147,553                   07/677201                    09/15/92
5,147,557                   07/754783                    09/15/92
5,147,558                   07/751945                    09/15/92
5,147,560                   07/760583                    09/15/92
5,147,562                   07/628062                    09/15/92
5,147,565                   07/742673                    09/15/92
5,147,568                   07/783946                    09/15/92
5,147,569                   07/576807                    09/15/92
5,147,571                   07/642259                    09/15/92
5,147,588                   07/536471                    09/15/92
5,147,591                   07/687002                    09/15/92
5,147,593                   07/611971                    09/15/92
5,147,595                   07/734555                    09/15/92
5,147,596                   07/489074                    09/15/92
5,147,599                   07/665317                    09/15/92
5,147,603                   07/704620                    09/15/92
5,147,604                   07/241801                    09/15/92
5,147,611                   07/384805                    09/15/92
5,147,623                   07/676344                    09/15/92
5,147,625                   07/739873                    09/15/92
5,147,626                   07/179173                    09/15/92
5,147,627                   07/179338                    09/15/92
5,147,628                   07/690615                    09/15/92
5,147,629                   07/743685                    09/15/92
5,147,630                   07/361549                    09/15/92
5,147,633                   07/620940                    09/15/92
5,147,640                   07/268307                    09/15/92
5,147,646                   07/759623                    09/15/92
5,147,648                   07/584373                    09/15/92
5,147,654                   07/793058                    09/15/92
5,147,655                   07/526671                    09/15/92
5,147,658                   07/694071                    09/15/92
5,147,661                   07/648316                    09/15/92
5,147,664                   07/807664                    09/15/92
5,147,665                   07/676870                    09/15/92
5,147,670                   07/557345                    09/15/92
5,147,671                   07/568838                    09/15/92
5,147,678                   07/456119                    09/15/92
5,147,685                   07/657489                    09/15/92
5,147,686                   07/639183                    09/15/92
5,147,691                   07/546764                    09/15/92
5,147,694                   07/563183                    09/15/92
5,147,697                   07/670689                    09/15/92
5,147,709                   07/722839                    09/15/92
5,147,711                   07/596154                    09/15/92
5,147,717                   07/752755                    09/15/92
5,147,721                   07/377165                    09/15/92
5,147,724                   07/772786                    09/15/92
5,147,731                   07/759149                    09/15/92
5,147,741                   07/602013                    09/15/92
5,147,742                   07/707220                    09/15/92
5,147,745                   07/604272                    09/15/92
5,147,748                   07/508852                    09/15/92
5,147,749                   07/560695                    09/15/92
5,147,758                   07/657736                    09/15/92
5,147,781                   07/020946                    09/15/92
5,147,791                   07/759971                    09/15/92
5,147,798                   07/727373                    09/15/92
5,147,802                   07/629260                    09/15/92
5,147,810                   07/639064                    09/15/92
5,147,837                   07/600889                    09/15/92
5,147,840                   07/767702                    09/15/92
5,147,841                   07/617325                    09/15/92
5,147,861                   07/761511                    09/15/92
5,147,863                   07/600295                    09/15/92
5,147,864                   07/599580                    09/15/92
5,147,865                   07/746272                    09/15/92
5,147,867                   07/824738                    09/15/92
5,147,874                   07/560775                    09/15/92
5,147,876                   07/459376                    09/15/92
5,147,878                   07/511095                    09/15/92
5,147,883                   07/708515                    09/15/92
5,147,889                   07/722080                    09/15/92
5,147,892                   07/722504                    09/15/92
5,147,897                   07/749600                    09/15/92
5,147,907                   07/550630                    09/15/92
5,147,913                   07/652922                    09/15/92
5,147,918                   07/713522                    09/15/92
5,147,926                   07/422527                    09/15/92
5,147,942                   07/476687                    09/15/92
5,147,948                   07/631932                    09/15/92
5,147,953                   07/733947                    09/15/92
5,147,954                   07/609393                    09/15/92
5,147,959                   07/652683                    09/15/92
5,147,961                   07/773720                    09/15/92
5,147,978                   07/747011                    09/15/92
5,147,979                   07/626143                    09/15/92
5,147,983                   07/762566                    09/15/92
5,147,990                   07/677911                    09/15/92
5,147,991                   07/733466                    09/15/92
5,148,002                   07/669073                    09/15/92
5,148,004                   07/578283                    09/15/92
5,148,007                   07/769491                    09/15/92
5,148,008                   07/789803                    09/15/92
5,148,019                   07/631093                    09/15/92
5,148,023                   07/506240                    09/15/92
5,148,030                   07/692418                    09/15/92
5,148,039                   07/623869                    09/15/92
5,148,042                   07/578235                    09/15/92
5,148,044                   07/485507                    09/15/92
5,148,045                   07/656682                    09/15/92
5,148,046                   07/594728                    09/15/92
5,148,064                   07/664304                    09/15/92
5,148,083                   07/540707                    09/15/92
5,148,094                   07/566028                    09/15/92
5,148,102                   07/768632                    09/15/92
5,148,106                   07/710634                    09/15/92
5,148,109                   07/579531                    09/15/92
5,148,111                   07/674265                    09/15/92
5,148,126                   07/808179                    09/15/92
5,148,129                   07/723731                    09/15/92
5,148,134                   07/677033                    09/15/92
5,148,136                   07/747234                    09/15/92
5,148,140                   07/515211                    09/15/92
5,148,146                   07/716165                    09/15/92
5,148,149                   07/648766                    09/15/92
5,148,164                   07/685411                    09/15/92
5,148,171                   07/735592                    09/15/92
5,148,177                   07/660299                    09/15/92
5,148,189                   07/701225                    09/15/92
5,148,195                   07/687367                    09/15/92
5,148,233                   07/603884                    09/15/92
5,148,235                   07/658600                    09/15/92
5,148,259                   07/740872                    09/15/92
5,148,276                   07/620194                    09/15/92
5,148,278                   07/640102                    09/15/92
,148,279                   07/671061                    09/15/92
5,148,284                   07/611548                    09/15/92
5,148,288                   07/574899                    09/15/92
5,148,296                   07/634808                    09/15/92
5,148,299                   07/744429                    09/15/92
5,148,309                   07/805155                    09/15/92
5,148,313                   07/730369                    09/15/92
5,148,316                   07/693473                    09/15/92
5,148,317                   07/720150                    09/15/92
5,148,327                   07/712566                    09/15/92
5,148,334                   07/444764                    09/15/92
5,148,335                   07/522502                    09/15/92
5,148,340                   07/510484                    09/15/92
5,148,350                   07/513135                    09/15/92
5,148,374                   07/540547                    09/15/92
5,148,379                   07/443252                    09/15/92
5,148,383                   07/631825                    09/15/92
5,148,403                   07/731290                    09/15/92
5,148,410                   07/809798                    09/15/92
5,148,414                   07/786254                    09/15/92
5,148,415                   07/760591                    09/15/92
5,148,420                   07/589546                    09/15/92
5,148,424                   07/499641                    09/15/92
5,148,443                   07/601757                    09/15/92
5,148,446                   07/711832                    09/15/92
5,148,454                   07/750510                    09/15/92
5,148,458                   07/702123                    09/15/92
5,148,459                   07/807645                    09/15/92
5,148,460                   07/734565                    09/15/92
5,148,461                   07/684401                    09/15/92
5,148,462                   07/682146                    09/15/92
5,148,464                   07/625853                    09/15/92
5,148,468                   07/602471                    09/15/92
5,148,472                   07/622508                    09/15/92
5,148,499                   07/789459                    09/15/92
5,148,515                   07/740266                    09/15/92
5,148,518                   07/675112                    09/15/92
5,148,521                   07/425776                    09/15/92
5,148,530                   07/403554                    09/15/92
5,148,538                   07/424496                    09/15/92
5,148,543                   07/321641                    09/15/92

                  PATENTS WHICH EXPIRED ON September 17, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,555,565                   08/493909                    09/17/96
5,555,568                   08/349671                    09/17/96
5,555,571                   08/287146                    09/17/96
5,555,575                   08/244012                    09/17/96
5,555,577                   08/539333                    09/17/96
5,555,581                   08/519084                    09/17/96
5,555,582                   08/400746                    09/17/96
5,555,588                   08/199571                    09/17/96
5,555,589                   08/408638                    09/17/96
5,555,594                   08/311502                    09/17/96
5,555,599                   08/574343                    09/17/96
5,555,600                   08/406472                    09/17/96
5,555,602                   08/355628                    09/17/96
5,555,603                   08/293707                    09/17/96
5,555,606                   08/343515                    09/17/96
5,555,607                   08/397217                    09/17/96
5,555,611                   08/467867                    09/17/96
5,555,614                   08/356669                    09/17/96
5,555,616                   08/135914                    09/17/96
5,555,620                   08/468539                    09/17/96
5,555,627                   08/523563                    09/17/96
5,555,630                   08/397119                    09/17/96
5,555,634                   08/358112                    09/17/96
5,555,642                   08/179012                    09/17/96
5,555,650                   08/250546                    09/17/96
5,555,651                   08/494213                    09/17/96
5,555,658                   08/449008                    09/17/96
5,555,661                   08/356704                    09/17/96
5,555,662                   08/349375                    09/17/96
5,555,665                   08/420773                    09/17/96
5,555,674                   08/297231                    09/17/96
5,555,681                   08/498562                    09/17/96
5,555,697                   08/372003                    09/17/96
5,555,700                   08/529544                    09/17/96
5,555,716                   08/334028                    09/17/96
5,555,726                   08/414869                    09/17/96
5,555,729                   08/340381                    09/17/96
5,555,735                   08/543755                    09/17/96
5,555,740                   08/501610                    09/17/96
5,555,751                   08/331917                    09/17/96
5,555,764                   08/251308                    09/17/96
5,555,771                   08/183345                    09/17/96
5,555,775                   08/302545                    09/17/96
5,555,776                   08/345441                    09/17/96
5,555,777                   08/500116                    09/17/96
5,555,778                   08/285075                    09/17/96
5,555,779                   08/509817                    09/17/96
5,555,781                   08/393227                    09/17/96
5,555,795                   08/599854                    09/17/96
5,555,796                   08/281619                    09/17/96
5,555,799                   08/463690                    09/17/96
5,555,800                   08/401464                    09/17/96
5,555,807                   08/293990                    09/17/96
5,555,827                   08/277312                    09/17/96
5,555,832                   08/279865                    09/17/96
5,555,833                   08/294095                    09/17/96
5,555,834                   07/869946                    09/17/96
5,555,838                   08/329489                    09/17/96
5,555,839                   08/470334                    09/17/96
5,555,840                   08/235972                    09/17/96
5,555,848                   08/443596                    09/17/96
5,555,852                   08/509512                    09/17/96
5,555,865                   08/519523                    09/17/96
5,555,874                   08/321746                    09/17/96
5,555,878                   08/380635                    09/17/96
5,555,879                   08/302916                    09/17/96
5,555,881                   08/273409                    09/17/96
5,555,886                   08/535496                    09/17/96
5,555,892                   08/339415                    09/17/96
5,555,902                   08/438936                    09/17/96
5,555,904                   08/580894                    09/17/96
5,555,905                   08/244086                    09/17/96
5,555,907                   08/458429                    09/17/96
5,555,908                   08/494133                    09/17/96
5,555,920                   08/116449                    09/17/96
5,555,921                   08/244801                    09/17/96
5,555,928                   07/961936                    09/17/96
5,555,934                   08/489434                    09/17/96
5,555,936                   08/405181                    09/17/96
5,555,939                   08/549280                    09/17/96
5,555,940                   08/237038                    09/17/96
5,555,944                   08/301866                    09/17/96
5,555,949                   08/281638                    09/17/96
5,555,957                   08/423163                    09/17/96
5,555,961                   08/433264                    09/17/96
5,555,986                   08/524519                    09/17/96
5,555,994                   08/506559                    09/17/96
5,555,995                   08/414934                    09/17/96
5,555,997                   08/538255                    09/17/96
5,556,012                   08/302004                    09/17/96
5,556,015                   08/210192                    09/17/96
5,556,016                   08/079609                    09/17/96
5,556,020                   08/505001                    09/17/96
5,556,026                   08/558616                    09/17/96
5,556,028                   08/420786                    09/17/96
5,556,031                   08/318090                    09/17/96
5,556,032                   08/453458                    09/17/96
5,556,038                   08/305965                    09/17/96
5,556,057                   08/413595                    09/17/96
5,556,061                   08/307213                    09/17/96
5,556,063                   08/329638                    09/17/96
5,556,064                   08/247574                    09/17/96
5,556,065                   08/326010                    09/17/96
5,556,067                   08/352016                    09/17/96
5,556,068                   08/325106                    09/17/96
5,556,070                   08/415539                    09/17/96
5,556,075                   08/039254                    09/17/96
5,556,076                   08/417997                    09/17/96
5,556,081                   08/281519                    09/17/96
5,556,085                   08/505460                    09/17/96
5,556,093                   08/408227                    09/17/96
5,556,109                   08/219649                    09/17/96
5,556,117                   08/242744                    09/17/96
5,556,121                   08/542329                    09/17/96
5,556,122                   08/256629                    09/17/96
5,556,131                   08/403099                    09/17/96
5,556,135                   08/358817                    09/17/96
5,556,136                   08/428912                    09/17/96
5,556,141                   08/526998                    09/17/96
5,556,143                   08/406633                    09/17/96
5,556,148                   08/314096                    09/17/96
5,556,151                   08/460849                    09/17/96
5,556,152                   08/526389                    09/17/96
5,556,154                   08/328862                    09/17/96
5,556,156                   08/130282                    09/17/96
5,556,159                   08/085942                    09/17/96
5,556,160                   08/317873                    09/17/96
5,556,161                   08/358244                    09/17/96
5,556,162                   08/523468                    09/17/96
5,556,166                   08/406037                    09/17/96
5,556,167                   08/497543                    09/17/96
5,556,172                   08/240555                    09/17/96
5,556,179                   08/370155                    09/17/96
5,556,192                   08/504053                    09/17/96
5,556,201                   08/505747                    09/17/96
5,556,203                   08/519770                    09/17/96
5,556,206                   08/327983                    09/17/96
5,556,216                   08/381413                    09/17/96
5,556,218                   08/421918                    09/17/96
5,556,219                   08/358824                    09/17/96
5,556,222                   08/385353                    09/17/96
5,556,223                   08/290821                    09/17/96
5,556,243                   08/310981                    09/17/96
5,556,245                   08/353455                    09/17/96
5,556,247                   08/139566                    09/17/96
5,556,249                   08/488847                    09/17/96
5,556,258                   08/489898                    09/17/96
5,556,261                   08/494884                    09/17/96
5,556,264                   08/508586                    09/17/96
5,556,270                   08/405073                    09/17/96
5,556,274                   08/404254                    09/17/96
5,556,282                   08/184493                    09/17/96
5,556,289                   08/371526                    09/17/96
5,556,290                   08/439861                    09/17/96
5,556,294                   08/249862                    09/17/96
5,556,298                   08/561280                    09/17/96
5,556,306                   08/349059                    09/17/96
5,556,310                   08/576512                    09/17/96
5,556,317                   08/427158                    09/17/96
5,556,318                   08/420207                    09/17/96
5,556,327                   08/322606                    09/17/96
5,556,342                   08/347369                    09/17/96
5,556,345                   08/511690                    09/17/96
5,556,350                   08/297156                    09/17/96
5,556,359                   08/489923                    09/17/96
5,556,361                   08/498470                    09/17/96
5,556,362                   08/407065                    09/17/96
5,556,366                   08/245891                    09/17/96
5,556,368                   08/325065                    09/17/96
5,556,369                   08/000201                    09/17/96
5,556,371                   08/303751                    09/17/96
5,556,384                   08/423553                    09/17/96
5,556,393                   08/107706                    09/17/96
5,556,397                   08/329342                    09/17/96
5,556,398                   08/349150                    09/17/96
5,556,400                   08/412574                    09/17/96
5,556,404                   08/573652                    09/17/96
5,556,407                   08/017268                    09/17/96
5,556,411                   08/271986                    09/17/96
5,556,428                   08/128809                    09/17/96
5,556,445                   08/310574                    09/17/96
5,556,454                   08/381771                    09/17/96
5,556,456                   08/363882                    09/17/96
5,556,457                   08/426107                    09/17/96
5,556,461                   08/260919                    09/17/96
5,556,470                   08/385558                    09/17/96
5,556,472                   08/454483                    09/17/96
5,556,489                   08/291159                    09/17/96
5,556,490                   08/289798                    09/17/96
5,556,498                   08/358719                    09/17/96
5,556,515                   08/339855                    09/17/96
5,556,518                   08/393128                    09/17/96
5,556,531                   08/435162                    09/17/96
5,556,534                   08/404473                    09/17/96
5,556,535                   08/331386                    09/17/96
5,556,547                   08/330315                    09/17/96
5,556,551                   08/477242                    09/17/96
5,556,554                   08/377091                    09/17/96
5,556,562                   08/354416                    09/17/96
5,556,563                   08/419729                    09/17/96
5,556,575                   08/413340                    09/17/96
5,556,576                   08/532536                    09/17/96
5,556,590                   08/484399                    09/17/96
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