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 16, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Application                       Issue
Number                           Number                            Date

4,724,546                        07/045,546                        02/16/88
4,724,558                        06/904,040                        02/16/88
4,724,572                        06/733,759                        02/16/88
4,724,579                        06/802,729                        02/16/88
4,724,592                        06/911,542                        02/16/88
4,724,593                        06/902,865                        02/16/88
4,724,601                        06/827,968                        02/16/88
4,724,608                        06/932,574                        02/16/88
4,724,610                        06/934,294                        02/16/88
4,724,611                        06/898,428                        02/16/88
4,724,622                        06/888,698                        02/16/88
4,724,636                        06/916,683                        02/16/88
4,724,639                        06/816,229                        02/16/88
4,724,646                        06/909,844                        02/16/88
4,724,654                        07/052,797                        02/16/88
4,724,656                        06/897,953                        02/16/88
4,724,664                        06/789,062                        02/16/88
4,724,667                        07/006,877                        02/16/88
4,724,669                        06/858,068                        02/16/88
4,724,674                        06/793,022                        02/16/88
4,724,692                        07/005,914                        02/16/88
4,724,694                        06/900,422                        02/16/88
4,724,695                        06/939,417                        02/16/88
4,724,696                        06/868,557                        02/16/88
4,724,711                        06/903,320                        02/16/88
4,724,724                        07/000,061                        02/16/88
4,724,730                        06/841,315                        02/16/88
4,724,733                        06/792,649                        02/16/88
4,724,741                        06/903,923                        02/16/88
4,724,758                        07/070,654                        02/16/88
4,724,767                        06/855,862                        02/16/88
4,724,777                        06/820,023                        02/16/88
4,724,786                        06/795,107                        02/16/88
4,724,797                        06/908,162                        02/16/88
4,724,804                        07/018,179                        02/16/88
4,724,805                        07/018,180                        02/16/88
4,724,813                        07/024,290                        02/16/88
4,724,819                        07/006,221                        02/16/88
4,724,824                        06/899,445                        02/16/88
4,724,833                        06/858,705                        02/16/88
4,724,838                        06/914,194                        02/16/88
4,724,849                        06/908,428                        02/16/88
4,724,868                        07/004,099                        02/16/88
4,724,869                        07/029,089                        02/16/88
4,724,873                        06/886,265                        02/16/88
4,724,875                        06/933,480                        02/16/88
4,724,880                        06/920,151                        02/16/88
4,724,883                        06/815,380                        02/16/88
4,724,889                        07/042,773                        02/16/88
4,724,892                        07/044,098                        02/16/88
4,724,893                        06/727,855                        02/16/88
4,724,904                        06/674,455                        02/16/88
4,724,905                        06/907,260                        02/16/88
4,724,917                        07/024,985                        02/16/88
4,724,927                        06/854,608                        02/16/88
4,724,938                        07/009,647                        02/16/88
4,724,949                        06/836,846                        02/16/88
4,724,951                        06/787,746                        02/16/88
4,724,953                        06/918,923                        02/16/88
4,724,955                        07/057,600                        02/16/88
4,724,956                        06/824,854                        02/16/88
4,724,971                        06/817,888                        02/16/88
4,724,984                        06/910,961                        02/16/88
4,724,993                        06/927,557                        02/16/88
4,725,011                        07/007,357                        02/16/88
4,725,012                        06/880,597                        02/16/88
4,725,018                        07/034,733                        02/16/88
4,725,025                        06/842,772                        02/16/88
4,725,027                        06/910,638                        02/16/88
4,725,030                        06/946,926                        02/16/88
4,725,034                        06/783,507                        02/16/88
4,725,037                        07/034,637                        02/16/88
4,725,041                        06/941,313                        02/16/88
4,725,045                        06/869,010                        02/16/88
4,725,073                        06/903,299                        02/16/88
4,725,077                        06/935,628                        02/16/88
4,725,078                        06/880,137                        02/16/88
4,725,079                        06/884,535                        02/16/88
4,725,086                        06/938,846                        02/16/88
4,725,093                        07/002,964                        02/16/88
4,725,094                        07/060,129                        02/16/88
4,725,102                        06/847,779                        02/16/88
4,725,120                        06/664,701                        02/16/88
4,725,140                        06/925,068                        02/16/88
4,725,152                        06/924,545                        02/16/88
4,725,160                        07/006,896                        02/16/88
4,725,169                        06/941,253                        02/16/88
4,725,173                        06/860,482                        02/16/88
4,725,209                        07/010,845                        02/16/88
4,725,213                        07/018,494                        02/16/88
4,725,215                        06/946,493                        02/16/88
4,725,219                        06/875,331                        02/16/88
4,725,236                        06/775,163                        02/16/88
4,725,241                        07/002,092                        02/16/88
4,725,243                        06/901,020                        02/16/88
4,725,247                        07/059,234                        02/16/88
4,725,248                        06/900,780                        02/16/88
4,725,250                        07/006,848                        02/16/88
4,725,251                        07/011,503                        02/16/88
4,725,261                        06/944,442                        02/16/88
4,725,265                        06/934,851                        02/16/88
4,725,269                        06/799,232                        02/16/88
4,725,270                        06/920,094                        02/16/88
4,725,273                        06/897,970                        02/16/88
4,725,281                        06/884,253                        02/16/88
4,725,282                        06/817,851                        02/16/88
4,725,286                        06/942,982                        02/16/88
4,725,287                        06/934,683                        02/16/88
4,725,296                        06/865,517                        02/16/88
4,725,303                        06/931,380                        02/16/88
4,725,306                        06/789,411                        02/16/88
4,725,307                        06/945,614                        02/16/88
4,725,311                        07/043,160                        02/16/88
4,725,316                        06/721,428                        02/16/88
4,725,321                        06/816,990                        02/16/88
4,725,335                        06/716,418                        02/16/88
4,725,336                        06/696,925                        02/16/88
4,725,338                        06/832,412                        02/16/88
4,725,339                        06/579,733                        02/16/88
4,725,341                        07/002,843                        02/16/88
4,725,345                        06/853,182                        02/16/88
4,725,361                        06/912,387                        02/16/88
4,725,362                        06/799,269                        02/16/88
4,725,370                        06/865,851                        02/16/88
4,725,383                        06/924,146                        02/16/88
4,725,389                        06/820,841                        02/16/88
4,725,393                        06/913,528                        02/16/88
4,725,395                        06/689,117                        02/16/88
4,725,404                        06/872,873                        02/16/88
4,725,411                        06/796,710                        02/16/88
4,725,420                        06/909,193                        02/16/88
4,725,422                        07/036,176                        02/16/88
4,725,424                        06/777,292                        02/16/88
4,725,426                        06/758,982                        02/16/88
4,725,428                        06/795,526                        02/16/88
4,725,448                        06/938,665                        02/16/88
4,725,450                        07/020,221                        02/16/88
4,725,451                        06/828,142                        02/16/88
4,725,456                        06/843,600                        02/16/88
4,725,457                        06/894,168                        02/16/88
4,725,468                        06/826,594                        02/16/88
4,725,470                        06/911,235                        02/16/88
4,725,482                        06/685,838                        02/16/88
4,725,486                        07/029,715                        02/16/88
4,725,492                        06/796,741                        02/16/88
4,725,505                        06/906,473                        02/16/88
4,725,525                        06/883,273                        02/16/88
4,725,527                        06/813,536                        02/16/88
4,725,534                        06/706,232                        02/16/88
4,725,539                        06/584,347                        02/16/88
4,725,540                        06/750,877                        02/16/88
4,725,545                        07/020,557                        02/16/88
4,725,555                        06/921,519                        02/16/88
4,725,557                        06/573,920                        02/16/88
4,725,560                        06/905,012                        02/16/88
4,725,562                        06/844,655                        02/16/88
4,725,566                        06/871,869                        02/16/88
4,725,567                        06/803,172                        02/16/88
4,725,568                        06/631,698                        02/16/88
4,725,578                        06/904,193                        02/16/88
4,725,593                        06/853,378                        02/16/88
4,725,594                        06/681,344                        02/16/88
4,725,595                        07/001,318                        02/16/88
4,725,596                        06/897,169                        02/16/88
4,725,598                        06/939,241                        02/16/88
4,725,599                        06/913,884                        02/16/88
4,725,601                        06/865,331                        02/16/88
4,725,625                        06/765,166                        02/16/88
4,725,632                        06/810,575                        02/16/88
4,725,633                        06/815,339                        02/16/88
4,725,635                        07/048,695                        02/16/88
4,725,639                        06/550,324                        02/16/88
4,725,646                        06/878,362                        02/16/88
4,725,649                        06/899,671                        02/16/88
4,725,652                        07/021,837                        02/16/88
4,725,655                        06/919,583                        02/16/88
4,725,657                        06/915,176                        02/16/88
4,725,661                        07/035,940                        02/16/88
4,725,662                        06/933,375                        02/16/88
4,725,665                        06/888,351                        02/16/88
4,725,667                        06/848,828                        02/16/88
4,725,672                        06/921,209                        02/16/88
4,725,674                        06/841,290                        02/16/88
4,725,689                        06/776,462                        02/16/88
4,725,707                        06/943,041                        02/16/88
4,725,715                        06/856,666                        02/16/88
4,725,716                        06/827,413                        02/16/88
4,725,724                        06/841,908                        02/16/88
4,725,727                        06/811,229                        02/16/88
4,725,728                        06/896,164                        02/16/88
4,725,729                        06/823,937                        02/16/88
4,725,731                        06/881,142                        02/16/88
4,725,734                        06/730,041                        02/16/88
4,725,742                        06/865,977                        02/16/88
4,725,743                        06/856,630                        02/16/88
4,725,744                        06/736,260                        02/16/88
4,725,745                        06/643,260                        02/16/88
4,725,767                        07/052,313                        02/16/88
4,725,775                        06/873,530                        02/16/88
4,725,780                        06/789,040                        02/16/88
4,725,803                        06/918,972                        02/16/88
4,725,804                        06/882,219                        02/16/88
4,725,805                        06/943,780                        02/16/88
4,725,806                        07/052,070                        02/16/88
4,725,807                        06/841,439                        02/16/88
4,725,815                        06/841,483                        02/16/88
4,725,828                        06/701,902                        02/16/88
4,725,832                        06/746,211                        02/16/88
4,725,837                        06/230,035                        02/16/88
4,725,845                        06/835,677                        02/16/88
4,725,848                        06/718,465                        02/16/88
4,725,850                        07/027,710                        02/16/88
4,725,856                        06/839,148                        02/16/88
4,725,857                        07/020,411                        02/16/88
4,725,865                        06/773,240                        02/16/88
4,725,874                        06/919,554                        02/16/88
4,725,881                        06/840,573                        02/16/88
4,725,882                        06/912,849                        02/16/88
4,725,883                        06/886,844                        02/16/88
4,725,885                        06/946,542                        02/16/88
4,725,892                        06/855,559                        02/16/88
4,725,916                        06/850,676                        02/16/88
4,725,917                        06/740,428                        02/16/88
4,725,936                        07/026,204                        02/16/88
4,725,939                        06/913,982                        02/16/88
4,725,944                        06/926,812                        02/16/88
4,725,945                        06/651,562                        02/16/88
4,725,947                        06/645,672                        02/16/88
4,725,948                        06/799,716                        02/16/88
4,725,950                        06/746,989                        02/16/88
4,725,953                        06/756,168                        02/16/88
4,725,966                        06/727,157                        02/16/88
4,725,973                        06/545,160                        02/16/88
4,725,974                        06/699,307                        02/16/88
4,725,975                        06/826,660                        02/16/88
4,725,993                        07/028,718                        02/16/88
4,726,001                        07/033,666                        02/16/88
4,726,004                        06/789,825                        02/16/88
4,726,014                        06/780,493                        02/16/88
4,726,020                        06/861,204                        02/16/88
4,726,022                        06/857,897                        02/16/88
4,726,023                        06/862,950                        02/16/88
4,726,029                        06/774,298                        02/16/88
4,726,041                        06/881,809                        02/16/88
4,726,047                        06/573,249                        02/16/88
4,726,048                        06/596,357                        02/16/88
4,726,051                        06/679,726                        02/16/88

                  PATENTS WHICH EXPIRED ON February 11, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,086,514                        07/710,465                        02/11/92
5,086,516                        07/579,731                        02/11/92
5,086,517                        07/605,794                        02/11/92
5,086,518                        07/696,264                        02/11/92
5,086,525                        07/509,372                        02/11/92
5,086,527                        07/567,515                        02/11/92
5,086,528                        07/584,765                        02/11/92
5,086,530                        07/581,671                        02/11/92
5,086,533                        07/700,345                        02/11/92
5,086,535                        07/600,848                        02/11/92
5,086,538                        07/542,450                        02/11/92
5,086,539                        07/607,363                        02/11/92
5,086,542                        07/621,051                        02/11/92
5,086,546                        07/535,585                        02/11/92
5,086,548                        07/578,285                        02/11/92
5,086,555                        07/586,436                        02/11/92
5,086,557                        07/580,460                        02/11/92
5,086,558                        07/581,854                        02/11/92
5,086,562                        07/684,186                        02/11/92
5,086,563                        07/668,056                        02/11/92
5,086,568                        07/602,598                        02/11/92
5,086,569                        07/381,647                        02/11/92
5,086,573                        07/432,893                        02/11/92
5,086,574                        07/692,773                        02/11/92
5,086,575                        07/480,597                        02/11/92
5,086,576                        07/529,934                        02/11/92
5,086,584                        07/420,258                        02/11/92
5,086,585                        07/493,804                        02/11/92
5,086,591                        07/560,584                        02/11/92
5,086,593                        07/475,958                        02/11/92
5,086,595                        07/479,652                        02/11/92
5,086,608                        07/539,103                        02/11/92
5,086,626                        07/288,959                        02/11/92
5,086,629                        07/723,119                        02/11/92
5,086,639                        07/640,317                        02/11/92
5,086,641                        07/516,603                        02/11/92
5,086,650                        07/637,724                        02/11/92
5,086,663                        07/558,510                        02/11/92
5,086,666                        07/544,540                        02/11/92
5,086,669                        07/545,629                        02/11/92
5,086,673                        07/688,812                        02/11/92
5,086,674                        07/693,468                        02/11/92
5,086,675                        07/568,176                        02/11/92
5,086,680                        07/480,792                        02/11/92
5,086,688                        07/639,844                        02/11/92
5,086,689                        07/651,974                        02/11/92
5,086,694                        07/561,056                        02/11/92
5,086,695                        07/633,208                        02/11/92
5,086,705                        07/485,090                        02/11/92
5,086,714                        07/509,085                        02/11/92
5,086,724                        07/601,509                        02/11/92
5,086,725                        07/533,509                        02/11/92
5,086,731                        07/608,617                        02/11/92
5,086,738                        07/667,050                        02/11/92
5,086,739                        07/505,691                        02/11/92
5,086,749                        07/438,686                        02/11/92
5,086,751                        07/678,154                        02/11/92
5,086,752                        07/589,382                        02/11/92
5,086,755                        07/383,595                        02/11/92
5,086,757                        07/620,074                        02/11/92
5,086,760                        07/715,735                        02/11/92
5,086,762                        07/669,970                        02/11/92
5,086,766                        07/585,068                        02/11/92
5,086,767                        07/588,275                        02/11/92
5,086,777                        07/517,882                        02/11/92
5,086,778                        07/556,084                        02/11/92
5,086,779                        07/530,302                        02/11/92
5,086,787                        07/662,526                        02/11/92
5,086,792                        07/533,937                        02/11/92
5,086,794                        07/541,498                        02/11/92
5,086,800                        07/663,477                        02/11/92
5,086,802                        07/600,671                        02/11/92
5,086,803                        07/606,962                        02/11/92
5,086,807                        07/651,011                        02/11/92
5,086,811                        07/558,230                        02/11/92
5,086,813                        07/534,747                        02/11/92
5,086,819                        07/522,761                        02/11/92
5,086,822                        07/570,130                        02/11/92
5,086,823                        07/540,228                        02/11/92
5,086,824                        07/366,921                        02/11/92
5,086,839                        07/611,188                        02/11/92
5,086,840                        07/471,199                        02/11/92
5,086,848                        07/600,431                        02/11/92
5,086,850                        07/679,373                        02/11/92
5,086,851                        07/604,784                        02/11/92
5,086,856                        07/616,073                        02/11/92
5,086,859                        07/555,818                        02/11/92
5,086,862                        07/580,976                        02/11/92
5,086,863                        07/613,500                        02/11/92
5,086,877                        07/484,842                        02/11/92
5,086,880                        07/595,075                        02/11/92
5,086,881                        07/670,132                        02/11/92
5,086,882                        07/574,093                        02/11/92
5,086,889                        07/554,470                        02/11/92
5,086,914                        07/523,438                        02/11/92
5,086,916                        07/633,656                        02/11/92
5,086,917                        07/673,739                        02/11/92
5,086,928                        07/623,789                        02/11/92
5,086,931                        07/575,557                        02/11/92
5,086,938                        07/474,823                        02/11/92
5,086,939                        07/628,392                        02/11/92
5,086,944                        07/235,107                        02/11/92
5,086,945                        07/491,169                        02/11/92
5,086,947                        07/687,947                        02/11/92
5,086,951                        07/421,587                        02/11/92
5,086,953                        07/506,725                        02/11/92
5,086,956                        07/636,519                        02/11/92
5,086,958                        07/578,686                        02/11/92
5,086,960                        07/640,283                        02/11/92
5,086,962                        07/529,626                        02/11/92
5,086,963                        07/460,556                        02/11/92
5,086,964                        07/314,905                        02/11/92
5,086,970                        07/647,076                        02/11/92
5,086,971                        07/442,357                        02/11/92
5,086,973                        07/507,488                        02/11/92
5,086,974                        07/629,214                        02/11/92
5,086,994                        07/592,255                        02/11/92
5,087,000                        07/665,804                        02/11/92
5,087,003                        07/664,462                        02/11/92
5,087,005                        07/654,276                        02/11/92
5,087,012                        07/543,365                        02/11/92
5,087,013                        07/296,883                        02/11/92
5,087,018                        07/388,063                        02/11/92
5,087,027                        07/548,458                        02/11/92
5,087,029                        07/655,188                        02/11/92
5,087,031                        07/681,921                        02/11/92
5,087,035                        07/383,932                        02/11/92
5,087,038                        07/667,492                        02/11/92
5,087,046                        07/642,440                        02/11/92
5,087,047                        07/668,052                        02/11/92
5,087,055                        07/570,772                        02/11/92
5,087,056                        07/547,080                        02/11/92
5,087,057                        07/467,448                        02/11/92
5,087,059                        07/541,793                        02/11/92
5,087,074                        07/550,173                        02/11/92
5,087,079                        07/574,115                        02/11/92
5,087,085                        07/599,069                        02/11/92
5,087,089                        07/722,154                        02/11/92
5,087,091                        07/684,723                        02/11/92
5,087,092                        07/577,665                        02/11/92
5,087,093                        07/701,055                        02/11/92
5,087,095                        07/554,440                        02/11/92
5,087,098                        07/587,690                        02/11/92
5,087,099                        07/557,907                        02/11/92
5,087,101                        07/625,440                        02/11/92
5,087,110                        07/381,397                        02/11/92
5,087,112                        07/554,472                        02/11/92
5,087,116                        07/559,026                        02/11/92
5,087,118                        07/535,658                        02/11/92
5,087,122                        07/565,804                        02/11/92
5,087,125                        07/581,355                        02/11/92
5,087,128                        07/505,574                        02/11/92
5,087,130                        07/672,338                        02/11/92
5,087,132                        07/636,019                        02/11/92
5,087,139                        07/297,857                        02/11/92
5,087,141                        07/452,908                        02/11/92
5,087,145                        07/681,219                        02/11/92
5,087,150                        07/504,295                        02/11/92
5,087,162                        07/297,566                        02/11/92
5,087,163                        07/602,741                        02/11/92
5,087,167                        07/571,001                        02/11/92
5,087,169                        07/456,690                        02/11/92
5,087,170                        07/463,556                        02/11/92
5,087,171                        07/538,849                        02/11/92
5,087,185                        07/403,941                        02/11/92
5,087,187                        07/491,408                        02/11/92
5,087,189                        07/582,064                        02/11/92
5,087,190                        07/633,633                        02/11/92
5,087,193                        07/565,380                        02/11/92
5,087,194                        07/571,757                        02/11/92
5,087,199                        07/632,532                        02/11/92
5,087,204                        07/495,370                        02/11/92
5,087,205                        07/489,860                        02/11/92
5,087,206                        07/618,870                        02/11/92
5,087,214                        07/703,523                        02/11/92
5,087,219                        07/669,857                        02/11/92
5,087,222                        07/506,106                        02/11/92
5,087,229                        07/696,423                        02/11/92
5,087,234                        07/495,070                        02/11/92
5,087,236                        07/454,688                        02/11/92
5,087,237                        07/604,804                        02/11/92
5,087,258                        07/457,745                        02/11/92
5,087,260                        07/407,563                        02/11/92
5,087,262                        07/505,692                        02/11/92
5,087,269                        07/563,226                        02/11/92
5,087,275                        07/544,887                        02/11/92
5,087,276                        07/641,284                        02/11/92
5,087,277                        07/676,813                        02/11/92
5,087,285                        07/481,151                        02/11/92
5,087,293                        07/627,135                        02/11/92
5,087,298                        07/682,480                        02/11/92
5,087,301                        07/288,635                        02/11/92
5,087,310                        07/460,587                        02/11/92
5,087,319                        07/540,359                        02/11/92
5,087,323                        07/551,925                        02/11/92
5,087,325                        07/668,536                        02/11/92
5,087,333                        07/524,082                        02/11/92
5,087,342                        07/409,597                        02/11/92
5,087,346                        07/506,839                        02/11/92
5,087,350                        07/630,057                        02/11/92
5,087,352                        07/661,401                        02/11/92
5,087,353                        07/266,732                        02/11/92
5,087,355                        07/557,151                        02/11/92
5,087,366                        07/453,797                        02/11/92
5,087,373                        07/707,122                        02/11/92
5,087,374                        07/488,092                        02/11/92
5,087,375                        07/299,979                        02/11/92
5,087,378                        07/531,059                        02/11/92
5,087,380                        07/474,842                        02/11/92
5,087,383                        07/690,659                        02/11/92
5,087,384                        07/497,252                        02/11/92
5,087,395                        07/551,823                        02/11/92
5,087,400                        07/415,257                        02/11/92
5,087,405                        07/268,425                        02/11/92
5,087,408                        07/567,950                        02/11/92
5,087,410                        07/572,855                        02/11/92
5,087,420                        07/258,156                        02/11/92
5,087,428                        07/530,207                        02/11/92
5,087,435                        07/054,285                        02/11/92
5,087,438                        07/221,991                        02/11/92
5,087,447                        07/420,280                        02/11/92
5,087,448                        07/306,479                        02/11/92
5,087,453                        07/607,693                        02/11/92
5,087,464                        07/568,482                        02/11/92
5,087,466                        07/423,411                        02/11/92
5,087,475                        07/681,428                        02/11/92
5,087,489                        07/413,164                        02/11/92
5,087,491                        07/479,004                        02/11/92
5,087,493                        07/601,447                        02/11/92
5,087,498                        07/508,950                        02/11/92
5,087,501                        07/213,707                        02/11/92
5,087,507                        07/268,754                        02/11/92
5,087,511                        07/575,763                        02/11/92
5,087,515                        07/449,695                        02/11/92
5,087,517                        07/433,136                        02/11/92
5,087,524                        07/519,036                        02/11/92
5,087,526                        07/599,813                        02/11/92
5,087,529                        07/457,755                        02/11/92
5,087,539                        07/385,862                        02/11/92
5,087,541                        07/530,088                        02/11/92
5,087,550                        07/412,461                        02/11/92
5,087,557                        07/498,454                        02/11/92
5,087,559                        07/169,856                        02/11/92
5,087,561                        07/545,256                        02/11/92
5,087,562                        07/514,633                        02/11/92
5,087,573                        07/162,995                        02/11/92
5,087,580                        07/583,422                        02/11/92
5,087,581                        07/606,674                        02/11/92
5,087,583                        07/385,436                        02/11/92
5,087,587                        07/012,249                        02/11/92
5,087,593                        07/625,180                        02/11/92
5,087,597                        07/554,551                        02/11/92
5,087,604                        07/492,292                        02/11/92
5,087,621                        07/507,957                        02/11/92
5,087,629                        07/492,486                        02/11/92
5,087,630                        07/422,122                        02/11/92
5,087,640                        07/544,448                        02/11/92
5,087,645                        07/272,838                        02/11/92
5,087,654                        07/478,508                        02/11/92
5,087,655                        07/478,514                        02/11/92
5,087,671                        07/543,349                        02/11/92
5,087,675                        07/485,513                        02/11/92
5,087,680                        07/423,482                        02/11/92
5,087,685                        07/445,742                        02/11/92
5,087,687                        07/470,932                        02/11/92
5,087,691                        07/402,272                        02/11/92
5,087,693                        07/689,572                        02/11/92
5,087,701                        07/489,205                        02/11/92
5,087,705                        07/510,884                        02/11/92
5,087,707                        07/683,618                        02/11/92
5,087,711                        07/648,572                        02/11/92
5,087,716                        07/607,194                        02/11/92
5,087,717                        07/562,030                        02/11/92
5,087,720                        07/726,335                        02/11/92
5,087,727                        07/605,436                        02/11/92
5,087,728                        07/551,107                        02/11/92
5,087,729                        07/509,765                        02/11/92
5,087,735                        07/627,007                        02/11/92
5,087,738                        07/703,951                        02/11/92
5,087,742                        07/538,057                        02/11/92
5,087,744                        07/213,837                        02/11/92
5,087,747                        07/523,627                        02/11/92
5,087,748                        07/463,391                        02/11/92
5,087,749                        07/621,406                        02/11/92
5,087,752                        07/581,520                        02/11/92
5,087,754                        07/567,478                        02/11/92
5,087,760                        07/460,658                        02/11/92
5,087,767                        07/630,814                        02/11/92
5,087,770                        07/621,697                        02/11/92
5,087,775                        07/604,026                        02/11/92
5,087,782                        07/344,935                        02/11/92
5,087,786                        07/514,173                        02/11/92
5,087,794                        07/554,769                        02/11/92
5,087,796                        07/511,089                        02/11/92
5,087,799                        07/634,412                        02/11/92
5,087,800                        07/642,704                        02/11/92
5,087,802                        07/558,114                        02/11/92
5,087,803                        07/526,716                        02/11/92
5,087,808                        07/661,427                        02/11/92
5,087,809                        07/617,731                        02/11/92
5,087,810                        07/599,010                        02/11/92
5,087,814                        07/547,159                        02/11/92
5,087,817                        07/674,810                        02/11/92
5,087,821                        07/678,279                        02/11/92
5,087,831                        07/502,211                        02/11/92
5,087,832                        07/584,737                        02/11/92
5,087,842                        07/341,250                        02/11/92
5,087,847                        07/692,881                        02/11/92
5,087,851                        07/518,697                        02/11/92
5,087,852                        07/492,152                        02/11/92
5,087,853                        07/424,197                        02/11/92
5,087,854                        07/606,297                        02/11/92
5,087,855                        07/550,769                        02/11/92
5,087,856                        07/540,123                        02/11/92
5,087,861                        07/402,484                        02/11/92
5,087,881                        07/476,380                        02/11/92
5,087,885                        07/509,154                        02/11/92
5,087,892                        07/535,587                        02/11/92
5,087,895                        07/151,341                        02/11/92
5,087,899                        07/353,921                        02/11/92
5,087,904                        07/477,478                        02/11/92
5,087,915                        07/459,531                        02/11/92
5,087,916                        07/523,130                        02/11/92
5,087,917                        07/584,157                        02/11/92
5,087,924                        07/644,507                        02/11/92
5,087,926                        07/501,942                        02/11/92
5,087,929                        07/637,171                        02/11/92
5,087,932                        07/525,548                        02/11/92
5,087,944                        07/517,029                        02/11/92
5,087,952                        07/321,962                        02/11/92
5,087,974                        07/578,271                        02/11/92
5,087,982                        07/613,092                        02/11/92
5,087,987                        07/676,817                        02/11/92
5,087,996                        07/455,078                        02/11/92
5,087,999                        07/573,697                        02/11/92
5,088,000                        07/458,023                        02/11/92
5,088,003                        07/568,994                        02/11/92
5,088,006                        07/691,628                        02/11/92
5,088,008                        07/589,522                        02/11/92
5,088,012                        07/616,361                        02/11/92
5,088,014                        07/640,894                        02/11/92
5,088,019                        07/584,067                        02/11/92
5,088,022                        07/379,779                        02/11/92
5,088,055                        07/483,461                        02/11/92
5,088,067                        07/692,870                        02/11/92
5,088,079                        07/404,941                        02/11/92
5,088,082                        07/563,701                        02/11/92
5,088,083                        07/285,540                        02/11/92
5,088,087                        07/558,137                        02/11/92
5,088,088                        07/398,803                        02/11/92
5,088,093                        07/109,075                        02/11/92
5,088,100                        07/610,588                        02/11/92
5,088,110                        07/325,085                        02/11/92

                  PATENTS WHICH EXPIRED ON February 13, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,490,296                        08/244,941                        02/13/96
5,490,300                        08/232,504                        02/13/96
5,490,305                        08/213,631                        02/13/96
5,490,306                        08/233,253                        02/13/96
5,490,308                        08/235,185                        02/13/96
5,490,315                        08/181,761                        02/13/96
5,490,317                        08/260,756                        02/13/96
5,490,321                        08/232,684                        02/13/96
5,490,326                        08/203,940                        02/13/96
5,490,331                        08/451,460                        02/13/96
5,490,332                        08/208,510                        02/13/96
5,490,333                        08/191,270                        02/13/96
5,490,335                        08/278,249                        02/13/96
5,490,336                        08/179,445                        02/13/96
5,490,337                        08/368,257                        02/13/96
5,490,338                        08/331,427                        02/13/96
5,490,339                        08/252,768                        02/13/96
5,490,343                        08/306,644                        02/13/96
5,490,344                        08/216,228                        02/13/96
5,490,345                        08/235,867                        02/13/96
5,490,346                        08/271,937                        02/13/96
5,490,348                        08/380,943                        02/13/96
5,490,351                        08/304,699                        02/13/96
5,490,355                        08/236,806                        02/13/96
5,490,356                        08/156,550                        02/13/96
5,490,359                        08/272,053                        02/13/96
5,490,367                        08/246,312                        02/13/96
5,490,373                        08/346,670                        02/13/96
5,490,374                        08/326,206                        02/13/96
5,490,392                        08/332,355                        02/13/96
5,490,398                        08/233,304                        02/13/96
5,490,400                        08/355,193                        02/13/96
5,490,402                        08/139,731                        02/13/96
5,490,403                        08/240,242                        02/13/96
5,490,415                        08/227,964                        02/13/96
5,490,419                        08/281,112                        02/13/96
5,490,420                        08/142,357                        02/13/96
5,490,430                        08/112,375                        02/13/96
5,490,432                        08/177,555                        02/13/96
5,490,433                        08/377,284                        02/13/96
5,490,437                        08/295,934                        02/13/96
5,490,442                        08/120,209                        02/13/96
5,490,444                        08/317,213                        02/13/96
5,490,447                        08/142,220                        02/13/96
5,490,454                        08/371,748                        02/13/96
5,490,456                        08/328,661                        02/13/96
5,490,464                        08/210,357                        02/13/96
5,490,466                        08/213,189                        02/13/96
5,490,467                        08/363,366                        02/13/96
5,490,468                        08/169,273                        02/13/96
5,490,470                        08/348,361                        02/13/96
5,490,478                        08/324,753                        02/13/96
5,490,492                        08/188,253                        02/13/96
5,490,493                        08/085,817                        02/13/96
5,490,494                        08/290,428                        02/13/96
5,490,495                        08/227,334                        02/13/96
5,490,514                        08/333,817                        02/13/96
5,490,517                        08/226,517                        02/13/96
5,490,528                        08/261,835                        02/13/96
5,490,530                        08/237,295                        02/13/96
5,490,535                        08/325,312                        02/13/96
5,490,537                        08/042,084                        02/13/96
5,490,538                        08/256,162                        02/13/96
5,490,540                        08/256,586                        02/13/96
5,490,549                        08/265,060                        02/13/96
5,490,557                        08/319,699                        02/13/96
5,490,560                        08/200,382                        02/13/96
5,490,563                        08/343,747                        02/13/96
5,490,565                        08/455,740                        02/13/96
5,490,568                        08/143,831                        02/13/96
5,490,579                        08/258,861                        02/13/96
5,490,590                        08/406,375                        02/13/96
5,490,597                        08/203,308                        02/13/96
5,490,602                        08/182,188                        02/13/96
5,490,606                        08/171,902                        02/13/96
5,490,607                        08/360,011                        02/13/96
5,490,612                        08/240,835                        02/13/96
5,490,617                        08/276,788                        02/13/96
5,490,619                        08/216,255                        02/13/96
5,490,622                        08/320,209                        02/13/96
5,490,624                        08/227,269                        02/13/96
5,490,626                        08/337,476                        02/13/96
5,490,630                        08/232,057                        02/13/96
5,490,632                        08/334,156                        02/13/96
5,490,634                        08/016,119                        02/13/96
5,490,637                        08/210,621                        02/13/96
5,490,642                        08/378,770                        02/13/96
5,490,652                        08/203,796                        02/13/96
5,490,653                        08/326,381                        02/13/96
5,490,654                        08/111,610                        02/13/96
5,490,660                        08/373,971                        02/13/96
5,490,668                        08/333,437                        02/13/96
5,490,672                        08/361,772                        02/13/96
5,490,677                        08/340,621                        02/13/96
5,490,682                        08/391,619                        02/13/96
5,490,686                        08/391,525                        02/13/96
5,490,688                        08/328,888                        02/13/96
5,490,707                        08/443,364                        02/13/96
5,490,708                        08/244,640                        02/13/96
5,490,711                        08/358,874                        02/13/96
5,490,712                        07/707,288                        02/13/96
5,490,713                        08/358,379                        02/13/96
5,490,717                        08/289,903                        02/13/96
5,490,735                        08/361,326                        02/13/96
5,490,741                        08/140,684                        02/13/96
5,490,747                        08/455,392                        02/13/96
5,490,756                        08/055,219                        02/13/96
5,490,763                        08/306,877                        02/13/96
5,490,778                        08/036,432                        02/13/96
5,490,779                        08/242,879                        02/13/96
5,490,803                        08/335,602                        02/13/96
5,490,807                        08/141,528                        02/13/96
5,490,812                        08/256,300                        02/13/96
5,490,814                        08/428,998                        02/13/96
5,490,818                        08/275,762                        02/13/96
5,490,821                        08/140,324                        02/13/96
5,490,828                        08/160,229                        02/13/96
5,490,841                        08/282,608                        02/13/96
5,490,854                        08/107,468                        02/13/96
5,490,863                        08/298,491                        02/13/96
5,490,864                        08/265,670                        02/13/96
5,490,865                        08/279,529                        02/13/96
5,490,873                        08/304,232                        02/13/96
5,490,875                        08/091,221                        02/13/96
5,490,877                        08/291,830                        02/13/96
5,490,895                        08/212,336                        02/13/96
5,490,900                        08/220,118                        02/13/96
5,490,907                        08/134,436                        02/13/96
5,490,920                        08/310,819                        02/13/96
5,490,928                        08/323,542                        02/13/96
5,490,931                        08/170,650                        02/13/96
5,490,936                        08/224,066                        02/13/96
5,490,944                        08/289,050                        02/13/96
5,490,947                        08/369,320                        02/13/96
5,490,969                        08/269,272                        02/13/96
5,490,973                        08/252,287                        02/13/96
5,490,976                        08/232,302                        02/13/96
5,490,981                        08/234,602                        02/13/96
5,490,982                        08/382,353                        02/13/96
5,490,998                        08/213,850                        02/13/96
5,491,006                        08/213,932                        02/13/96
5,491,014                        08/401,085                        02/13/96
5,491,032                        08/197,160                        02/13/96
5,491,049                        08/238,134                        02/13/96
5,491,056                        08/296,567                        02/13/96
5,491,087                        08/418,044                        02/13/96
5,491,095                        08/067,278                        02/13/96
5,491,097                        08/203,846                        02/13/96
5,491,112                        08/155,154                        02/13/96
5,491,126                        08/325,720                        02/13/96
5,491,128                        08/425,693                        02/13/96
5,491,132                        08/202,551                        02/13/96
5,491,137                        08/140,061                        02/13/96
5,491,144                        08/360,864                        02/13/96
5,491,151                        08/486,615                        02/13/96
5,491,157                        08/059,690                        02/13/96
5,491,158                        08/244,081                        02/13/96
5,491,163                        08/276,917                        02/13/96
5,491,164                        08/315,151                        02/13/96
5,491,171                        08/232,255                        02/13/96
5,491,175                        08/036,747                        02/13/96
5,491,185                        08/207,448                        02/13/96
5,491,186                        08/374,457                        02/13/96
5,491,201                        08/389,461                        02/13/96
5,491,207                        08/166,758                        02/13/96
5,491,209                        08/207,007                        02/13/96
5,491,221                        08/247,154                        02/13/96
5,491,232                        08/423,849                        02/13/96
5,491,244                        08/476,983                        02/13/96
5,491,255                        08/324,709                        02/13/96
5,491,256                        08/222,509                        02/13/96
5,491,262                        07/387,547                        02/13/96
5,491,263                        08/171,039                        02/13/96
5,491,265                        08/395,266                        02/13/96
5,491,273                        08/340,787                        02/13/96
5,491,279                        08/042,609                        02/13/96
5,491,283                        08/003,951                        02/13/96
5,491,301                        08/172,413                        02/13/96
5,491,304                        08/315,017                        02/13/96
5,491,322                        07/638,914                        02/13/96
5,491,327                        08/288,497                        02/13/96
5,491,335                        08/298,698                        02/13/96
5,491,342                        08/338,438                        02/13/96
5,491,351                        08/330,189                        02/13/96
5,491,363                        08/396,900                        02/13/96
5,491,379                        08/320,813                        02/13/96
5,491,387                        08/081,213                        02/13/96
5,491,391                        08/122,113                        02/13/96
5,491,403                        08/413,791                        02/13/96
5,491,405                        08/282,410                        02/13/96
5,491,409                        07/973,515                        02/13/96
5,491,414                        08/244,487                        02/13/96
5,491,416                        08/185,990                        02/13/96
5,491,419                        08/134,093                        02/13/96
5,491,439                        08/298,695                        02/13/96
5,491,440                        08/393,286                        02/13/96
5,491,450                        08/069,869                        02/13/96
5,491,462                        08/199,823                        02/13/96
5,491,470                        08/228,715                        02/13/96
5,491,473                        08/131,697                        02/13/96
5,491,476                        08/130,490                        02/13/96
5,491,485                        08/232,265                        02/13/96
5,491,486                        08/233,091                        02/13/96
5,491,492                        08/182,295                        02/13/96
5,491,520                        08/265,727                        02/13/96
5,491,547                        08/253,806                        02/13/96
5,491,550                        07/977,399                        02/13/96
5,491,560                        08/053,459                        02/13/96
5,491,566                        08/157,738                        02/13/96
5,491,570                        07/991,571                        02/13/96
5,491,579                        08/251,146                        02/13/96
5,491,585                        08/224,053                        02/13/96
5,491,591                        07/820,563                        02/13/96
5,491,596                        08/376,448                        02/13/96
5,491,602                        08/440,518                        02/13/96
5,491,606                        08/410,382                        02/13/96
5,491,607                        08/294,426                        02/13/96
5,491,612                        08/393,922                        02/13/96
5,491,614                        08/413,590                        02/13/96
5,491,616                        08/182,787                        02/13/96
5,491,619                        08/406,436                        02/13/96
5,491,621                        08/371,814                        02/13/96
5,491,624                        08/328,975                        02/13/96
5,491,642                        08/162,507                        02/13/96
5,491,646                        07/982,672                        02/13/96
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