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 February 9, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Serial                            Issue
Number                           Number                            Date

4,723,329                        06/861,450                        02/09/88
4,723,332                        06/843,772                        02/09/88
4,723,342                        06/916,781                        02/09/88
4,723,343                        06/909,700                        02/09/88
4,723,346                        06/910,865                        02/09/88
4,723,349                        06/896,782                        02/09/88
4,723,353                        06/884,207                        02/09/88
4,723,356                        06/911,055                        02/09/88
4,723,357                        07/015,731                        02/09/88
4,723,360                        06/877,958                        02/09/88
4,723,368                        06/766,155                        02/09/88
4,723,369                        06/828,504                        02/09/88
4,723,379                        06/861,105                        02/09/88
4,723,382                        06/896,848                        02/09/88
4,723,413                        06/932,279                        02/09/88
4,723,414                        06/791,781                        02/09/88
4,723,416                        07/050,545                        02/09/88
4,723,420                        06/752,988                        02/09/88
4,723,423                        07/006,260                        02/09/88
4,723,428                        06/872,656                        02/09/88
4,723,430                        06/830,196                        02/09/88
4,723,439                        06/927,491                        02/09/88
4,723,452                        06/941,582                        02/09/88
4,723,457                        06/696,501                        02/09/88
4,723,468                        06/922,688                        02/09/88
4,723,484                        06/912,587                        02/09/88
4,723,489                        06/907,499                        02/09/88
4,723,500                        06/853,203                        02/09/88
4,723,522                        06/919,450                        02/09/88
4,723,527                        07/015,791                        02/09/88
4,723,533                        06/884,191                        02/09/88
4,723,538                        06/919,444                        02/09/88
4,723,544                        06/883,561                        02/09/88
4,723,553                        06/878,858                        02/09/88
4,723,555                        06/926,578                        02/09/88
4,723,559                        06/528,923                        02/09/88
4,723,563                        06/890,379                        02/09/88
4,723,566                        06/803,397                        02/09/88
4,723,573                        06/810,768                        02/09/88
4,723,581                        06/941,816                        02/09/88
4,723,588                        06/751,533                        02/09/88
4,723,589                        06/864,611                        02/09/88
4,723,595                        06/890,557                        02/09/88
4,723,599                        07/022,864                        02/09/88
4,723,605                        06/939,667                        02/09/88
4,723,608                        06/913,200                        02/09/88
4,723,619                        06/844,793                        02/09/88
4,723,635                        06/928,683                        02/09/88
4,723,647                        06/725,222                        02/09/88
4,723,648                        06/711,808                        02/09/88
4,723,651                        06/904,300                        02/09/88
4,723,662                        06/929,739                        02/09/88
4,723,668                        06/942,776                        02/09/88
4,723,677                        06/887,512                        02/09/88
4,723,679                        06/871,834                        02/09/88
4,723,681                        06/502,319                        02/09/88
4,723,689                        06/878,881                        02/09/88
4,723,695                        06/926,589                        02/09/88
4,723,708                        07/068,717                        02/09/88
4,723,716                        06/908,268                        02/09/88
4,723,718                        06/360,826                        02/09/88
4,723,725                        06/908,699                        02/09/88
4,723,728                        06/797,947                        02/09/88
4,723,733                        06/853,124                        02/09/88
4,723,741                        06/929,635                        02/09/88
4,723,742                        06/945,684                        02/09/88
4,723,746                        07/077,755                        02/09/88
4,723,751                        06/888,455                        02/09/88
4,723,755                        06/868,514                        02/09/88
4,723,763                        06/919,042                        02/09/88
4,723,782                        07/063,496                        02/09/88
4,723,784                        06/887,518                        02/09/88
4,723,789                        06/855,822                        02/09/88
4,723,791                        06/921,125                        02/09/88
4,723,792                        06/807,468                        02/09/88
4,723,795                        06/859,648                        02/09/88
4,723,807                        06/855,923                        02/09/88
4,723,818                        06/347,683                        02/09/88
4,723,831                        06/803,628                        02/09/88
4,723,834                        06/795,012                        02/09/88
4,723,846                        06/895,953                        02/09/88
4,723,859                        06/804,593                        02/09/88
4,723,864                        06/789,184                        02/09/88
4,723,874                        07/009,835                        02/09/88
4,723,883                        06/764,242                        02/09/88
4,723,884                        06/818,533                        02/09/88
4,723,901                        07/030,045                        02/09/88
4,723,903                        06/746,097                        02/09/88
4,723,910                        06/635,173                        02/09/88
4,723,921                        06/937,775                        02/09/88
4,723,928                        06/911,056                        02/09/88
4,723,938                        06/945,965                        02/09/88
4,723,939                        06/892,192                        02/09/88
4,723,953                        06/897,077                        02/09/88
4,723,958                        06/866,415                        02/09/88
4,723,967                        07/043,168                        02/09/88
4,723,968                        07/022,678                        02/09/88
4,723,971                        06/921,773                        02/09/88
4,723,973                        06/912,061                        02/09/88
4,723,978                        06/793,390                        02/09/88
4,723,988                        07/031,286                        02/09/88
4,723,997                        07/040,195                        02/09/88
4,723,998                        06/802,991                        02/09/88
4,724,011                        06/730,239                        02/09/88
4,724,014                        06/816,988                        02/09/88
4,724,015                        06/729,298                        02/09/88
4,724,016                        06/777,645                        02/09/88
4,724,017                        07/030,686                        02/09/88
4,724,020                        06/900,778                        02/09/88
4,724,024                        06/938,473                        02/09/88
4,724,029                        06/831,959                        02/09/88
4,724,043                        06/943,845                        02/09/88
4,724,049                        06/878,787                        02/09/88
4,724,050                        07/024,960                        02/09/88
4,724,053                        07/065,180                        02/09/88
4,724,057                        06/844,041                        02/09/88
4,724,060                        06/797,966                        02/09/88
4,724,071                        06/920,125                        02/09/88
4,724,079                        06/690,758                        02/09/88
4,724,080                        07/006,258                        02/09/88
4,724,111                        06/941,487                        02/09/88
4,724,113                        06/809,457                        02/09/88
4,724,120                        06/920,134                        02/09/88
4,724,127                        07/016,483                        02/09/88
4,724,128                        07/075,802                        02/09/88
4,724,145                        06/798,775                        02/09/88
4,724,147                        06/713,733                        02/09/88
4,724,158                        06/708,620                        02/09/88
4,724,160                        06/889,666                        02/09/88
4,724,165                        06/912,311                        02/09/88
4,724,171                        06/923,133                        02/09/88
4,724,186                        07/012,589                        02/09/88
4,724,196                        07/021,555                        02/09/88
4,724,200                        06/882,113                        02/09/88
4,724,202                        06/560,462                        02/09/88
4,724,206                        06/579,492                        02/09/88
4,724,215                        06/706,068                        02/09/88
4,724,224                        06/891,661                        02/09/88
4,724,230                        06/634,267                        02/09/88
4,724,234                        06/792,257                        02/09/88
4,724,237                        06/624,842                        02/09/88
4,724,239                        06/776,579                        02/09/88
4,724,246                        06/940,308                        02/09/88
4,724,248                        06/881,539                        02/09/88
4,724,257                        06/885,449                        02/09/88
4,724,260                        06/835,013                        02/09/88
4,724,265                        06/863,656                        02/09/88
4,724,268                        06/882,246                        02/09/88
4,724,278                        06/807,104                        02/09/88
4,724,284                        06/822,601                        02/09/88
4,724,288                        06/944,376                        02/09/88
4,724,289                        07/005,660                        02/09/88
4,724,292                        06/887,969                        02/09/88
4,724,295                        07/013,416                        02/09/88
4,724,297                        06/872,576                        02/09/88
4,724,304                        06/804,627                        02/09/88
4,724,308                        06/756,986                        02/09/88
4,724,315                        06/938,142                        02/09/88
4,724,329                        06/539,487                        02/09/88
4,724,335                        06/865,335                        02/09/88
4,724,340                        06/933,424                        02/09/88
4,724,344                        06/845,649                        02/09/88
4,724,349                        06/838,071                        02/09/88
4,724,356                        06/917,882                        02/09/88
4,724,357                        06/899,768                        02/09/88
4,724,365                        06/850,564                        02/09/88
4,724,366                        06/378,930                        02/09/88
4,724,372                        06/909,110                        02/09/88
4,724,379                        07/067,159                        02/09/88
4,724,382                        06/786,518                        02/09/88
4,724,383                        06/730,279                        02/09/88
4,724,384                        07/020,137                        02/09/88
4,724,387                        06/792,273                        02/09/88
4,724,392                        06/856,306                        02/09/88
4,724,394                        06/786,666                        02/09/88
4,724,398                        06/921,948                        02/09/88
4,724,399                        06/831,087                        02/09/88
4,724,404                        06/793,806                        02/09/88
4,724,405                        06/941,497                        02/09/88
4,724,406                        06/887,281                        02/09/88
4,724,413                        06/850,521                        02/09/88
4,724,422                        06/776,187                        02/09/88
4,724,423                        06/692,932                        02/09/88
4,724,424                        06/815,825                        02/09/88
4,724,429                        06/837,464                        02/09/88
4,724,434                        06/605,834                        02/09/88
4,724,436                        06/909,692                        02/09/88
4,724,444                        06/915,619                        02/09/88
4,724,445                        06/858,609                        02/09/88
4,724,451                        07/026,415                        02/09/88
4,724,457                        06/922,421                        02/09/88
4,724,458                        06/939,827                        02/09/88
4,724,467                        06/483,999                        02/09/88
4,724,493                        06/884,639                        02/09/88
4,724,496                        07/004,283                        02/09/88
4,724,507                        06/944,077                        02/09/88
4,724,508                        06/810,111                        02/09/88
4,724,516                        06/810,402                        02/09/88
4,724,520                        06/750,923                        02/09/88
4,724,536                        06/830,687                        02/09/88
4,724,542                        06/821,564                        02/09/88

                   PATENTS WHICH EXPIRED ON February 4, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Serial                            Issue
Number                           Number                            Date

5,084,914                        07/604,132                        02/04/92
5,084,920                        07/467,785                        02/04/92
5,084,921                        07/642,949                        02/04/92
5,084,924                        07/626,907                        02/04/92
5,084,931                        07/339,241                        02/04/92
5,084,935                        07/645,594                        02/04/92
5,084,936                        07/553,216                        02/04/92
5,084,938                        07/537,075                        02/04/92
5,084,939                        07/612,368                        02/04/92
5,084,941                        07/593,085                        02/04/92
5,084,943                        07/592,627                        02/04/92
5,084,944                        07/649,548                        02/04/92
5,084,953                        07/622,427                        02/04/92
5,084,956                        07/615,967                        02/04/92
5,084,960                        07/647,115                        02/04/92
5,084,965                        07/683,874                        02/04/92
5,084,971                        07/581,296                        02/04/92
5,084,984                        07/735,257                        02/04/92
5,084,992                        07/688,899                        02/04/92
5,084,997                        07/494,169                        02/04/92
5,085,006                        07/655,187                        02/04/92
5,085,008                        07/480,244                        02/04/92
5,085,013                        07/507,774                        02/04/92
5,085,016                        07/639,777                        02/04/92
5,085,019                        07/613,077                        02/04/92
5,085,023                        07/645,705                        02/04/92
5,085,025                        07/594,413                        02/04/92
5,085,026                        07/615,908                        02/04/92
5,085,028                        07/594,566                        02/04/92
5,085,035                        07/593,187                        02/04/92
5,085,045                        07/533,758                        02/04/92
5,085,047                        07/671,165                        02/04/92
5,085,050                        07/618,659                        02/04/92
5,085,054                        07/608,820                        02/04/92
5,085,056                        07/570,671                        02/04/92
5,085,057                        07/522,179                        02/04/92
5,085,058                        07/553,831                        02/04/92
5,085,060                        07/727,019                        02/04/92
5,085,062                        07/413,110                        02/04/92
5,085,063                        07/622,927                        02/04/92
5,085,077                        07/638,393                        02/04/92
5,085,079                        07/535,760                        02/04/92
5,085,081                        07/617,386                        02/04/92
5,085,087                        07/550,285                        02/04/92
5,085,089                        07/651,186                        02/04/92
5,085,090                        07/469,386                        02/04/92
5,085,101                        07/324,310                        02/04/92
5,085,107                        07/578,445                        02/04/92
5,085,121                        07/478,088                        02/04/92
5,085,122                        07/652,155                        02/04/92
5,085,125                        07/632,210                        02/04/92
5,085,126                        07/639,246                        02/04/92
5,085,132                        07/648,520                        02/04/92
5,085,133                        07/604,167                        02/04/92
5,085,137                        07/709,791                        02/04/92
5,085,138                        07/668,242                        02/04/92
5,085,153                        07/533,803                        02/04/92
5,085,156                        07/461,939                        02/04/92
5,085,157                        07/581,033                        02/04/92
5,085,162                        07/583,507                        02/04/92
5,085,163                        07/402,540                        02/04/92
5,085,167                        07/558,579                        02/04/92
5,085,168                        07/537,573                        02/04/92
5,085,169                        07/438,343                        02/04/92
5,085,176                        07/633,932                        02/04/92
5,085,178                        07/677,227                        02/04/92
5,085,183                        07/633,256                        02/04/92
5,085,184                        07/581,775                        02/04/92
5,085,187                        07/667,146                        02/04/92
5,085,201                        07/616,103                        02/04/92
5,085,202                        07/613,406                        02/04/92
5,085,207                        07/646,287                        02/04/92
5,085,210                        07/594,766                        02/04/92
5,085,217                        07/609,143                        02/04/92
5,085,220                        07/417,525                        02/04/92
5,085,226                        07/530,300                        02/04/92
5,085,232                        07/551,975                        02/04/92
5,085,240                        07/705,592                        02/04/92
5,085,242                        07/464,873                        02/04/92
5,085,243                        07/708,118                        02/04/92
5,085,245                        07/621,777                        02/04/92
5,085,248                        07/668,630                        02/04/92
5,085,251                        07/544,840                        02/04/92
5,085,262                        07/572,352                        02/04/92
5,085,266                        07/741,352                        02/04/92
5,085,276                        07/574,625                        02/04/92
5,085,278                        07/597,074                        02/04/92
5,085,289                        07/521,127                        02/04/92
5,085,290                        07/658,493                        02/04/92
5,085,291                        07/643,499                        02/04/92
5,085,293                        07/662,323                        02/04/92
5,085,295                        07/693,034                        02/04/92
5,085,299                        07/483,854                        02/04/92
5,085,303                        07/591,129                        02/04/92
5,085,306                        07/506,434                        02/04/92
5,085,307                        07/674,561                        02/04/92
5,085,318                        07/615,323                        02/04/92
5,085,321                        07/508,855                        02/04/92
5,085,328                        07/597,792                        02/04/92
5,085,334                        07/608,488                        02/04/92
5,085,336                        07/667,127                        02/04/92
5,085,338                        07/637,551                        02/04/92
5,085,356                        07/540,627                        02/04/92
5,085,358                        07/595,544                        02/04/92
5,085,363                        07/608,142                        02/04/92
5,085,364                        07/577,716                        02/04/92
5,085,366                        07/722,314                        02/04/92
5,085,379                        07/518,128                        02/04/92
5,085,384                        07/617,034                        02/04/92
5,085,385                        07/689,538                        02/04/92
5,085,387                        07/666,831                        02/04/92
5,085,392                        07/291,214                        02/04/92
5,085,393                        07/557,545                        02/04/92
5,085,395                        07/492,737                        02/04/92
5,085,396                        07/159,419                        02/04/92
5,085,398                        07/679,812                        02/04/92
5,085,404                        07/393,260                        02/04/92
5,085,408                        07/512,877                        02/04/92
5,085,428                        07/528,724                        02/04/92
5,085,433                        07/686,650                        02/04/92
5,085,435                        07/609,063                        02/04/92
5,085,436                        07/558,357                        02/04/92
5,085,449                        07/608,848                        02/04/92
5,085,455                        07/386,522                        02/04/92
5,085,456                        07/603,472                        02/04/92
5,085,461                        07/497,854                        02/04/92
5,085,462                        07/546,565                        02/04/92
5,085,469                        07/612,325                        02/04/92
5,085,478                        07/565,487                        02/04/92
5,085,480                        07/730,582                        02/04/92
5,085,485                        07/668,147                        02/04/92
5,085,488                        07/742,530                        02/04/92
5,085,493                        07/228,366                        02/04/92
5,085,505                        07/628,885                        02/04/92
5,085,507                        07/457,439                        02/04/92
5,085,508                        07/465,927                        02/04/92
5,085,509                        07/316,749                        02/04/92
5,085,515                        07/476,725                        02/04/92
5,085,528                        07/530,686                        02/04/92
5,085,532                        07/480,221                        02/04/92
5,085,535                        07/684,880                        02/04/92
5,085,537                        07/586,909                        02/04/92
5,085,540                        07/727,389                        02/04/92
5,085,548                        07/693,742                        02/04/92
5,085,550                        07/573,320                        02/04/92
5,085,551                        07/685,523                        02/04/92
5,085,552                        07/484,851                        02/04/92
5,085,553                        07/529,689                        02/04/92
5,085,554                        07/572,177                        02/04/92
5,085,557                        07/628,244                        02/04/92
5,085,564                        07/523,434                        02/04/92
5,085,572                        07/502,903                        02/04/92
5,085,573                        07/591,551                        02/04/92
5,085,576                        07/550,784                        02/04/92
5,085,578                        07/594,091                        02/04/92
5,085,581                        07/528,689                        02/04/92
5,085,588                        06/788,911                        02/04/92
5,085,591                        07/575,988                        02/04/92
5,085,597                        07/677,021                        02/04/92
5,085,598                        07/700,026                        02/04/92
5,085,605                        07/572,560                        02/04/92
5,085,610                        07/700,834                        02/04/92
5,085,611                        07/583,872                        02/04/92
5,085,616                        07/654,740                        02/04/92
5,085,618                        07/608,024                        02/04/92
5,085,619                        07/602,226                        02/04/92
5,085,625                        07/679,804                        02/04/92
5,085,627                        07/713,578                        02/04/92
5,085,639                        07/416,927                        02/04/92
5,085,640                        07/505,925                        02/04/92
5,085,647                        07/666,164                        02/04/92
5,085,653                        07/625,150                        02/04/92
5,085,663                        07/724,468                        02/04/92
5,085,664                        07/379,218                        02/04/92
5,085,668                        07/602,754                        02/04/92
5,085,670                        07/583,893                        02/04/92
5,085,674                        07/603,479                        02/04/92
5,085,680                        07/576,821                        02/04/92
5,085,693                        07/597,647                        02/04/92
5,085,701                        07/531,584                        02/04/92
5,085,706                        07/733,329                        02/04/92
5,085,708                        07/645,386                        02/04/92
5,085,712                        07/527,710                        02/04/92
5,085,734                        07/489,845                        02/04/92
5,085,737                        07/536,102                        02/04/92
5,085,739                        07/648,025                        02/04/92
5,085,744                        07/609,671                        02/04/92
5,085,749                        07/384,722                        02/04/92
5,085,750                        07/338,038                        02/04/92
5,085,760                        07/563,811                        02/04/92
5,085,767                        07/625,979                        02/04/92
5,085,768                        07/606,951                        02/04/92
5,085,770                        07/592,350                        02/04/92
5,085,772                        07/582,098                        02/04/92
5,085,785                        07/676,685                        02/04/92
5,085,790                        07/534,129                        02/04/92
5,085,792                        07/303,524                        02/04/92
5,085,805                        07/675,797                        02/04/92
5,085,806                        07/319,307                        02/04/92
5,085,808                        07/514,841                        02/04/92
5,085,819                        07/354,043                        02/04/92
5,085,821                        07/273,726                        02/04/92
5,085,823                        07/664,740                        02/04/92
5,085,824                        07/648,093                        02/04/92
5,085,828                        07/700,744                        02/04/92
5,085,830                        07/328,364                        02/04/92
5,085,832                        07/726,138                        02/04/92
5,085,833                        07/243,347                        02/04/92
5,085,834                        07/625,551                        02/04/92
5,085,837                        07/634,792                        02/04/92
5,085,838                        07/554,488                        02/04/92
5,085,846                        07/685,460                        02/04/92
5,085,848                        07/685,763                        02/04/92
5,085,851                        07/552,533                        02/04/92
5,085,863                        07/510,073                        02/04/92
5,085,867                        07/501,698                        02/04/92
5,085,881                        07/630,180                        02/04/92
5,085,891                        07/553,994                        02/04/92
5,085,900                        07/622,540                        02/04/92
5,085,901                        07/647,950                        02/04/92
5,085,907                        07/577,839                        02/04/92
5,085,912                        07/442,665                        02/04/92
5,085,914                        07/556,731                        02/04/92
5,085,917                        07/507,680                        02/04/92
5,085,926                        07/484,810                        02/04/92
5,085,928                        07/334,242                        02/04/92
5,085,930                        07/526,730                        02/04/92
5,085,937                        07/653,784                        02/04/92
5,085,938                        07/441,208                        02/04/92
5,085,944                        07/558,660                        02/04/92
5,085,945                        07/567,037                        02/04/92
5,085,955                        07/616,974                        02/04/92
5,085,959                        07/391,475                        02/04/92
5,085,964                        07/550,990                        02/04/92
5,085,981                        07/511,250                        02/04/92
5,085,984                        07/513,144                        02/04/92
5,085,985                        07/119,745                        02/04/92
5,085,991                        07/391,565                        02/04/92
5,085,994                        07/604,572                        02/04/92
5,085,997                        07/602,389                        02/04/92
5,086,007                        07/521,230                        02/04/92
5,086,009                        07/454,758                        02/04/92
5,086,016                        07/606,632                        02/04/92
5,086,019                        07/478,845                        02/04/92
5,086,029                        07/615,761                        02/04/92
5,086,030                        07/566,987                        02/04/92
5,086,033                        07/638,477                        02/04/92
5,086,038                        07/670,653                        02/04/92
5,086,042                        07/303,425                        02/04/92
5,086,045                        07/572,062                        02/04/92
5,086,051                        07/493,439                        02/04/92
5,086,056                        07/652,828                        02/04/92
5,086,059                        07/539,115                        02/04/92
5,086,060                        07/552,726                        02/04/92
5,086,061                        07/505,432                        02/04/92
5,086,069                        07/475,043                        02/04/92
5,086,070                        07/514,695                        02/04/92
5,086,074                        07/499,232                        02/04/92
5,086,079                        07/638,157                        02/04/92
5,086,083                        07/724,687                        02/04/92
5,086,085                        07/717,581                        02/04/92
5,086,087                        07/328,562                        02/04/92
5,086,091                        07/368,316                        02/04/92
5,086,093                        07/503,356                        02/04/92
5,086,094                        07/530,126                        02/04/92
5,086,104                        07/647,632                        02/04/92
5,086,115                        07/692,226                        02/04/92
5,086,120                        07/652,728                        02/04/92
5,086,122                        07/637,394                        02/04/92
5,086,126                        07/632,833                        02/04/92
5,086,127                        07/472,110                        02/04/92
5,086,129                        07/570,858                        02/04/92
5,086,133                        07/703,047                        02/04/92
5,086,138                        07/571,618                        02/04/92
5,086,139                        07/545,745                        02/04/92
5,086,149                        07/377,087                        02/04/92
5,086,151                        07/528,616                        02/04/92
5,086,152                        07/559,282                        02/04/92
5,086,156                        07/592,415                        02/04/92
5,086,158                        07/604,240                        02/04/92
5,086,170                        07/633,289                        02/04/92
5,086,179                        07/586,669                        02/04/92
5,086,180                        07/544,113                        02/04/92
5,086,185                        07/556,187                        02/04/92
5,086,195                        07/521,385                        02/04/92
5,086,197                        07/583,608                        02/04/92
5,086,199                        07/521,430                        02/04/92
5,086,200                        07/532,784                        02/04/92
5,086,209                        07/155,795                        02/04/92
5,086,232                        07/547,467                        02/04/92
5,086,239                        07/482,968                        02/04/92
5,086,240                        07/588,547                        02/04/92
5,086,245                        07/487,903                        02/04/92
5,086,252                        07/451,874                        02/04/92
5,086,254                        07/026,934                        02/04/92
5,086,256                        07/438,018                        02/04/92
5,086,260                        07/655,588                        02/04/92
5,086,265                        07/696,034                        02/04/92
5,086,272                        07/537,045                        02/04/92
5,086,277                        07/493,788                        02/04/92
5,086,282                        07/593,459                        02/04/92
5,086,284                        07/461,821                        02/04/92
5,086,287                        07/445,592                        02/04/92
5,086,292                        07/429,458                        02/04/92
5,086,298                        07/511,886                        02/04/92
5,086,303                        07/309,410                        02/04/92
5,086,316                        07/377,901                        02/04/92
5,086,328                        07/474,700                        02/04/92
5,086,331                        07/643,687                        02/04/92
5,086,335                        07/560,511                        02/04/92
5,086,341                        07/579,923                        02/04/92
5,086,357                        07/592,610                        02/04/92
5,086,359                        07/472,189                        02/04/92
5,086,360                        07/579,058                        02/04/92
5,086,366                        07/669,459                        02/04/92
5,086,367                        07/620,445                        02/04/92
5,086,368                        07/512,808                        02/04/92
5,086,369                        07/521,240                        02/04/92
5,086,372                        07/546,335                        02/04/92
5,086,373                        07/573,694                        02/04/92
5,086,377                        07/708,237                        02/04/92
5,086,379                        07/387,473                        02/04/92
5,086,387                        07/203,586                        02/04/92
5,086,391                        07/617,942                        02/04/92
5,086,400                        07/522,949                        02/04/92
5,086,431                        07/631,589                        02/04/92
5,086,443                        07/562,297                        02/04/92
5,086,444                        07/647,980                        02/04/92
5,086,456                        07/509,861                        02/04/92
5,086,464                        07/487,846                        02/04/92
5,086,473                        07/442,518                        02/04/92
5,086,477                        07/564,175                        02/04/92
5,086,478                        07/634,642                        02/04/92
5,086,483                        07/402,121                        02/04/92
5,086,490                        07/474,585                        02/04/92
5,086,496                        07/730,036                        02/04/92
5,086,509                        07/459,290                        02/04/92

                   PATENTS WHICH EXPIRED ON February 6, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Serial                            Issue
Number                           Number                            Date

5,488,738                        08/238,258                        02/06/96
5,488,739                        08/356,639                        02/06/96
5,488,740                        08/397,894                        02/06/96
5,488,743                        08/389,215                        02/06/96
5,488,744                        08/292,382                        02/06/96
5,488,746                        08/323,684                        02/06/96
5,488,747                        08/258,723                        02/06/96
5,488,748                        08/325,866                        02/06/96
5,488,754                        08/315,872                        02/06/96
5,488,755                        08/254,901                        02/06/96
5,488,756                        08/270,266                        02/06/96
5,488,767                        08/258,439                        02/06/96
5,488,772                        08/192,254                        02/06/96
5,488,773                        08/386,427                        02/06/96
5,488,774                        08/152,907                        02/06/96
5,488,776                        08/287,215                        02/06/96
5,488,778                        08/456,851                        02/06/96
5,488,779                        08/289,409                        02/06/96
5,488,784                        08/021,938                        02/06/96
5,488,786                        07/828,768                        02/06/96
5,488,790                        08/479,818                        02/06/96
5,488,792                        08/384,879                        02/06/96
5,488,799                        08/239,941                        02/06/96
5,488,800                        08/238,887                        02/06/96
5,488,803                        08/316,886                        02/06/96
5,488,805                        08/417,555                        02/06/96
5,488,820                        08/182,092                        02/06/96
5,488,821                        08/337,338                        02/06/96
5,488,828                        08/061,679                        02/06/96
5,488,839                        08/264,296                        02/06/96
5,488,843                        08/127,612                        02/06/96
5,488,845                        08/216,992                        02/06/96
5,488,848                        08/274,068                        02/06/96
5,488,855                        08/211,537                        02/06/96
5,488,860                        08/175,239                        02/06/96
5,488,861                        08/311,624                        02/06/96
5,488,867                        07/932,203                        02/06/96
5,488,870                        08/307,260                        02/06/96
5,488,871                        08/195,698                        02/06/96
5,488,873                        08/343,736                        02/06/96
5,488,875                        08/298,352                        02/06/96
5,488,878                        08/196,244                        02/06/96
5,488,881                        08/278,837                        02/06/96
5,488,885                        08/285,706                        02/06/96
5,488,890                        08/202,436                        02/06/96
5,488,892                        08/393,998                        02/06/96
5,488,902                        08/272,244                        02/06/96
5,488,903                        08/242,174                        02/06/96
5,488,908                        08/231,564                        02/06/96
5,488,909                        08/103,011                        02/06/96
5,488,915                        08/351,412                        02/06/96
5,488,918                        07/694,890                        02/06/96
5,488,919                        08/492,560                        02/06/96
5,488,922                        08/231,470                        02/06/96
5,488,928                        08/283,940                        02/06/96
5,488,933                        08/195,441                        02/06/96
5,488,941                        08/237,704                        02/06/96
5,488,946                        08/203,410                        02/06/96
5,488,947                        08/298,112                        02/06/96
5,488,955                        08/140,902                        02/06/96
5,488,966                        08/330,220                        02/06/96
5,488,971                        08/162,062                        02/06/96
5,488,973                        08/403,165                        02/06/96
5,488,976                        08/214,784                        02/06/96
5,488,977                        08/343,871                        02/06/96
5,489,006                        08/096,467                        02/06/96
5,489,007                        08/275,857                        02/06/96
5,489,010                        08/292,215                        02/06/96
5,489,021                        08/444,374                        02/06/96
5,489,027                        08/336,771                        02/06/96
5,489,028                        08/287,771                        02/06/96
5,489,030                        08/346,875                        02/06/96
5,489,031                        08/211,859                        02/06/96
5,489,042                        08/323,908                        02/06/96
5,489,049                        08/340,853                        02/06/96
5,489,057                        08/130,292                        02/06/96
5,489,064                        08/338,439                        02/06/96
5,489,066                        08/304,549                        02/06/96
5,489,069                        08/383,948                        02/06/96
5,489,070                        08/157,892                        02/06/96
5,489,075                        08/276,858                        02/06/96
5,489,079                        08/249,439                        02/06/96
5,489,080                        08/257,178                        02/06/96
5,489,081                        08/154,618                        02/06/96
5,489,086                        08/298,276                        02/06/96
5,489,088                        08/292,978                        02/06/96
5,489,090                        08/244,091                        02/06/96
5,489,098                        08/192,744                        02/06/96
5,489,100                        08/313,150                        02/06/96
5,489,102                        08/437,030                        02/06/96
5,489,104                        08/170,515                        02/06/96
5,489,108                        08/292,056                        02/06/96
5,489,112                        08/314,352                        02/06/96
5,489,113                        08/220,237                        02/06/96
5,489,121                        08/304,590                        02/06/96
5,489,137                        08/316,928                        02/06/96
5,489,138                        08/130,207                        02/06/96
5,489,141                        08/093,696                        02/06/96
5,489,144                        08/333,721                        02/06/96
5,489,147                        08/381,552                        02/06/96
5,489,148                        08/439,703                        02/06/96
5,489,159                        08/346,569                        02/06/96
5,489,164                        08/300,593                        02/06/96
5,489,165                        08/085,560                        02/06/96
5,489,178                        08/163,288                        02/06/96
5,489,184                        08/304,897                        02/06/96
5,489,192                        08/172,096                        02/06/96
5,489,197                        08/336,911                        02/06/96
5,489,199                        08/315,095                        02/06/96
5,489,213                        08/206,621                        02/06/96
5,489,230                        08/376,775                        02/06/96
5,489,231                        08/299,961                        02/06/96
5,489,232                        08/367,618                        02/06/96
5,489,234                        08/096,620                        02/06/96
5,489,240                        08/098,392                        02/06/96
5,489,244                        08/038,954                        02/06/96
5,489,251                        08/386,004                        02/06/96
5,489,253                        08/328,918                        02/06/96
5,489,257                        08/367,944                        02/06/96
5,489,267                        08/275,231                        02/06/96
5,489,276                        08/320,002                        02/06/96
5,489,281                        07/818,304                        02/06/96
5,489,309                        08/000,500                        02/06/96
5,489,310                        08/267,064                        02/06/96
5,489,316                        08/414,593                        02/06/96
5,489,329                        08/338,249                        02/06/96
5,489,348                        08/299,166                        02/06/96
5,489,351                        08/391,268                        02/06/96
5,489,354                        08/440,831                        02/06/96
5,489,356                        08/258,716                        02/06/96
5,489,365                        08/237,781                        02/06/96
5,489,370                        08/173,928                        02/06/96
5,489,389                        08/373,312                        02/06/96
5,489,393                        08/278,855                        02/06/96
5,489,396                        08/211,419                        02/06/96
5,489,397                        08/206,782                        02/06/96
5,489,401                        08/269,087                        02/06/96
5,489,410                        08/350,282                        02/06/96
5,489,411                        07/763,843                        02/06/96
5,489,417                        08/227,201                        02/06/96
5,489,420                        08/209,541                        02/06/96
5,489,421                        08/211,945                        02/06/96
5,489,422                        08/302,736                        02/06/96
5,489,429                        08/314,292                        02/06/96
5,489,437                        08/107,491                        02/06/96
5,489,439                        08/203,471                        02/06/96
5,489,440                        08/398,707                        02/06/96
5,489,441                        08/109,232                        02/06/96
5,489,451                        07/982,976                        02/06/96
5,489,453                        08/259,296                        02/06/96
5,489,459                        08/204,631                        02/06/96
5,489,477                        08/213,701                        02/06/96
5,489,485                        08/169,318                        02/06/96
5,489,506                        08/391,403                        02/06/96
5,489,510                        08/146,974                        02/06/96
5,489,512                        08/131,021                        02/06/96
5,489,521                        08/281,033                        02/06/96
5,489,526                        08/418,331                        02/06/96
5,489,535                        08/357,956                        02/06/96
5,489,560                        08/369,478                        02/06/96
5,489,564                        08/299,761                        02/06/96
5,489,573                        08/291,214                        02/06/96
5,489,585                        07/972,021                        02/06/96
5,489,591                        08/290,870                        02/06/96
5,489,592                        08/211,427                        02/06/96
5,489,599                        08/081,298                        02/06/96
5,489,604                        08/287,372                        02/06/96
5,489,613                        07/824,696                        02/06/96
5,489,615                        08/171,471                        02/06/96
5,489,623                        08/428,740                        02/06/96
5,489,626                        08/344,601                        02/06/96
5,489,634                        08/281,134                        02/06/96
5,489,640                        08/299,721                        02/06/96
5,489,658                        08/355,021                        02/06/96
5,489,664                        08/336,048                        02/06/96
5,489,671                        08/313,642                        02/06/96
5,489,672                        08/329,234                        02/06/96
5,489,673                        08/107,349                        02/06/96
5,489,693                        08/052,877                        02/06/96
5,489,712                        08/334,822                        02/06/96
5,489,716                        08/303,105                        02/06/96
5,489,719                        08/255,546                        02/06/96
5,489,724                        08/354,708                        02/06/96
5,489,731                        08/158,775                        02/06/96
5,489,735                        08/185,495                        02/06/96
5,489,736                        08/256,090                        02/06/96
5,489,737                        07/924,482                        02/06/96
5,489,751                        08/215,156                        02/06/96
5,489,754                        08/198,622                        02/06/96
5,489,790                        08/380,772                        02/06/96
5,489,808                        08/437,047                        02/06/96
5,489,817                        08/137,030                        02/06/96
5,489,833                        08/251,697                        02/06/96
5,489,838                        08/061,972                        02/06/96
5,489,841                        08/449,466                        02/06/96
5,489,869                        08/245,187                        02/06/96
5,489,873                        08/395,136                        02/06/96
5,489,877                        08/329,419                        02/06/96
5,489,886                        08/101,889                        02/06/96
5,489,887                        08/169,416                        02/06/96
5,489,890                        08/390,697                        02/06/96
5,489,893                        08/185,954                        02/06/96
5,489,901                        08/021,832                        02/06/96
5,489,909                        07/891,392                        02/06/96
5,489,910                        08/314,435                        02/06/96
5,489,911                        08/235,458                        02/06/96
5,489,914                        08/280,784                        02/06/96
5,489,915                        08/320,901                        02/06/96
5,489,918                        08/025,908                        02/06/96
5,489,934                        08/054,551                        02/06/96
5,489,938                        08/426,479                        02/06/96
5,489,940                        08/352,307                        02/06/96
5,489,961                        08/042,614                        02/06/96
5,489,991                        07/959,314                        02/06/96
5,490,005                        08/244,762                        02/06/96
5,490,008                        08/240,134                        02/06/96
5,490,013                        08/385,395                        02/06/96
5,490,034                        08/027,249                        02/06/96
5,490,035                        08/073,015                        02/06/96
5,490,040                        08/172,467                        02/06/96
5,490,045                        08/419,998                        02/06/96
5,490,060                        07/616,816                        02/06/96
5,490,071                        08/262,022                        02/06/96
5,490,086                        08/014,306                        02/06/96
5,490,100                        08/177,056                        02/06/96
5,490,146                        08/369,554                        02/06/96
5,490,154                        08/379,109                        02/06/96
5,490,159                        08/318,337                        02/06/96
5,490,161                        08/228,223                        02/06/96
5,490,162                        08/170,330                        02/06/96
5,490,166                        08/183,681                        02/06/96
5,490,176                        07/963,559                        02/06/96
5,490,187                        08/259,201                        02/06/96
5,490,189                        08/310,555                        02/06/96
5,490,200                        08/386,600                        02/06/96
5,490,211                        08/230,191                        02/06/96
5,490,213                        08/345,932                        02/06/96
5,490,219                        08/008,245                        02/06/96
5,490,221                        07/842,956                        02/06/96
5,490,225                        08/240,434                        02/06/96
5,490,232                        08/223,324                        02/06/96
5,490,243                        07/838,479                        02/06/96
5,490,248                        08/364,052                        02/06/96
5,490,267                        08/447,813                        02/06/96
5,490,282                        07/988,593                        02/06/96
5,490,283                        08/295,355                        02/06/96