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 2, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                        Serial                        Issue
Number                        Number                         Date

4,722,099                   06/936,615                   02/02/88
4,722,099                   06/936,615                   02/02/88
4,722,102                   06/839,129                   02/02/88
4,722,105                   06/902,972                   02/02/88
4,722,109                   06/771,310                   02/02/88
4,722,113                   06/803,242                   02/02/88
4,722,121                   06/915,411                   02/02/88
4,722,126                   06/908,631                   02/02/88
4,722,142                   06/789,344                   02/02/88
4,722,145                   06/708,810                   02/02/88
4,722,152                   06/771,876                   02/02/88
4,722,159                   07/018,784                   02/02/88
4,722,160                   06/896,644                   02/02/88
4,722,161                   06/374,547                   02/02/88
4,722,165                   07/003,264                   02/02/88
4,722,167                   06/928,938                   02/02/88
4,722,170                   06/929,840                   02/02/88
4,722,171                   06/857,141                   02/02/88
4,722,174                   06/737,218                   02/02/88
4,722,199                   06/937,006                   02/02/88
4,722,206                   06/889,338                   02/02/88
4,722,209                   06/850,772                   02/02/88
4,722,211                   06/319,019                   02/02/88
4,722,213                   07/009,006                   02/02/88
4,722,215                   06/832,417                   02/02/88
4,722,227                   06/887,133                   02/02/88
4,722,236                   06/819,079                   02/02/88
4,722,249                   06/820,657                   02/02/88
4,722,250                   06/846,045                   02/02/88
4,722,251                   06/846,043                   02/02/88
4,722,259                   06/846,384                   02/02/88
4,722,260                   06/914,143                   02/02/88
4,722,261                   06/909,803                   02/02/88
4,722,289                   07/063,432                   02/02/88
4,722,291                   06/826,819                   02/02/88
4,722,296                   07/007,591                   02/02/88
4,722,297                   06/829,035                   02/02/88
4,722,320                   06/924,051                   02/02/88
4,722,322                   07/057,711                   02/02/88
4,722,337                   06/849,486                   02/02/88
4,722,346                   06/843,363                   02/02/88
4,722,348                   06/907,073                   02/02/88
4,722,360                   06/819,705                   02/02/88
4,722,365                   06/812,089                   02/02/88
4,722,376                   06/862,464                   02/02/88
4,722,385                   07/026,317                   02/02/88
4,722,394                   06/873,555                   02/02/88
4,722,406                   06/847,777                   02/02/88
4,722,414                   07/002,951                   02/02/88
4,722,427                   06/915,832                   02/02/88
4,722,429                   06/896,159                   02/02/88
4,722,436                   07/004,859                   02/02/88
4,722,438                   07/037,459                   02/02/88
4,722,440                   07/028,852                   02/02/88
4,722,443                   06/858,852                   02/02/88
4,722,444                   06/720,886                   02/02/88
4,722,448                   07/015,437                   02/02/88
4,722,456                   06/889,471                   02/02/88
4,722,457                   06/903,970                   02/02/88
4,722,459                   06/894,115                   02/02/88
4,722,467                   06/872,235                   02/02/88
4,722,473                   06/744,790                   02/02/88
4,722,476                   06/900,896                   02/02/88
4,722,490                   06/937,571                   02/02/88
4,722,492                   07/004,855                   02/02/88
4,722,495                   07/017,494                   02/02/88
4,722,514                   06/669,468                   02/02/88
4,722,518                   06/792,845                   02/02/88
4,722,527                   06/816,798                   02/02/88
4,722,533                   07/029,941                   02/02/88
4,722,535                   06/818,139                   02/02/88
4,722,540                   06/910,935                   02/02/88
4,722,541                   06/516,229                   02/02/88
4,722,563                   06/791,588                   02/02/88
4,722,565                   06/833,234                   02/02/88
4,722,570                   07/005,154                   02/02/88
4,722,572                   06/861,351                   02/02/88
4,722,577                   06/927,349                   02/02/88
4,722,582                   06/807,451                   02/02/88
4,722,591                   06/840,238                   02/02/88
4,722,603                   06/879,854                   02/02/88
4,722,604                   06/461,203                   02/02/88
4,722,605                   06/903,832                   02/02/88
4,722,612                   06/772,372                   02/02/88
4,722,621                   06/793,062                   02/02/88
4,722,632                   06/918,407                   02/02/88
4,722,636                   06/892,102                   02/02/88
4,722,640                   06/412,984                   02/02/88
4,722,647                   06/806,506                   02/02/88
4,722,653                   07/018,835                   02/02/88
4,722,657                   06/846,101                   02/02/88
4,722,665                   06/794,578                   02/02/88
4,722,668                   06/898,338                   02/02/88
4,722,674                   06/875,996                   02/02/88
4,722,682                   06/930,924                   02/02/88
4,722,686                   06/877,347                   02/02/88
4,722,699                   06/879,773                   02/02/88
4,722,709                   06/799,605                   02/02/88
4,722,710                   06/937,347                   02/02/88
4,722,713                   06/763,418                   02/02/88
4,722,716                   06/941,811                   02/02/88
4,722,717                   06/846,318                   02/02/88
4,722,723                   06/940,620                   02/02/88
4,722,738                   06/889,690                   02/02/88
4,722,745                   07/040,041                   02/02/88
4,722,752                   06/874,383                   02/02/88
4,722,760                   06/887,949                   02/02/88
4,722,762                   06/552,846                   02/02/88
4,722,763                   06/945,596                   02/02/88
4,722,765                   06/946,115                   02/02/88
4,722,784                   06/800,075                   02/02/88
4,722,785                   06/854,429                   02/02/88
4,722,791                   06/830,355                   02/02/88
4,722,796                   06/812,991                   02/02/88
4,722,805                   06/771,525                   02/02/88
4,722,807                   06/622,908                   02/02/88
4,722,810                   06/896,318                   02/02/88
4,722,815                   07/041,662                   02/02/88
4,722,818                   06/783,917                   02/02/88
4,722,819                   06/856,743                   02/02/88
4,722,823                   06/525,889                   02/02/88
4,722,826                   06/906,935                   02/02/88
4,722,831                   06/769,293                   02/02/88
4,722,832                   06/900,633                   02/02/88
4,722,846                   06/720,265                   02/02/88
4,722,856                   06/815,512                   02/02/88
4,722,857                   07/021,353                   02/02/88
4,722,860                   06/935,630                   02/02/88
4,722,866                   07/046,437                   02/02/88
4,722,870                   06/692,978                   02/02/88
4,722,872                   06/856,244                   02/02/88
4,722,891                   06/622,567                   02/02/88
4,722,901                   06/858,925                   02/02/88
4,722,911                   06/862,063                   02/02/88
4,722,914                   06/896,356                   02/02/88
4,722,918                   06/895,406                   02/02/88
4,722,922                   06/693,553                   02/02/88
4,722,932                   06/708,556                   02/02/88
4,722,934                   07/026,198                   02/02/88
4,722,935                   06/843,533                   02/02/88
4,722,940                   06/816,909                   02/02/88
4,722,942                   07/019,904                   02/02/88
4,722,943                   07/028,119                   02/02/88
4,722,944                   06/904,589                   02/02/88
4,722,948                   06/829,281                   02/02/88
4,722,957                   06/944,291                   02/02/88
4,722,961                   06/874,389                   02/02/88
4,722,965                   06/832,832                   02/02/88
4,722,968                   07/014,563                   02/02/88
4,722,970                   06/896,339                   02/02/88
4,722,972                   06/827,706                   02/02/88
4,722,976                   06/800,858                   02/02/88
4,722,982                   06/907,916                   02/02/88
4,722,986                   06/771,259                   02/02/88
4,722,993                   06/937,677                   02/02/88
4,722,998                   06/872,105                   02/02/88
4,723,002                   06/856,893                   02/02/88
4,723,008                   06/899,073                   02/02/88
4,723,023                   06/876,427                   02/02/88
4,723,025                   07/012,526                   02/02/88
4,723,040                   06/944,262                   02/02/88
4,723,043                   06/882,515                   02/02/88
4,723,044                   06/874,144                   02/02/88
4,723,047                   06/910,650                   02/02/88
4,723,061                   06/891,147                   02/02/88
4,723,062                   07/061,436                   02/02/88
4,723,072                   06/688,989                   02/02/88
4,723,079                   06/844,512                   02/02/88
4,723,080                   06/774,848                   02/02/88
4,723,082                   06/884,896                   02/02/88
4,723,109                   06/838,201                   02/02/88
4,723,119                   06/730,053                   02/02/88
4,723,120                   06/818,632                   02/02/88
4,723,125                   06/878,891                   02/02/88
4,723,132                   06/885,693                   02/02/88
4,723,133                   07/013,988                   02/02/88
4,723,146                   06/728,073                   02/02/88
4,723,150                   06/550,118                   02/02/88
4,723,156                   07/070,123                   02/02/88
4,723,160                   06/859,686                   02/02/88
4,723,165                   06/935,425                   02/02/88
4,723,171                   06/784,914                   02/02/88
4,723,177                   06/888,384                   02/02/88
4,723,178                   06/848,882                   02/02/88
4,723,183                   07/003,013                   02/02/88
4,723,184                   06/790,331                   02/02/88
4,723,186                   06/798,397                   02/02/88
4,723,194                   06/911,434                   02/02/88
4,723,204                   06/750,658                   02/02/88
4,723,206                   06/737,686                   02/02/88
4,723,207                   06/680,257                   02/02/88
4,723,208                   06/853,734                   02/02/88
4,723,214                   06/702,170                   02/02/88
4,723,217                   06/746,846                   02/02/88
4,723,224                   06/815,610                   02/02/88
4,723,227                   06/607,050                   02/02/88
4,723,231                   07/004,744                   02/02/88
4,723,241                   06/756,201                   02/02/88
4,723,245                   06/750,440                   02/02/88
4,723,246                   06/759,491                   02/02/88
4,723,247                   07/008,986                   02/02/88
4,723,249                   06/801,008                   02/02/88
4,723,262                   06/813,544                   02/02/88
4,723,265                   06/780,847                   02/02/88
4,723,269                   06/812,788                   02/02/88
4,723,274                   06/813,185                   02/02/88
4,723,276                   06/785,318                   02/02/88
4,723,281                   06/735,978                   02/02/88
4,723,286                   06/932,956                   02/02/88
4,723,289                   06/840,021                   02/02/88
4,723,301                   06/835,619                   02/02/88
4,723,302                   06/893,183                   02/02/88
4,723,305                   06/877,069                   02/02/88
4,723,309                   06/842,730                   02/02/88

                   PATENTS WHICH EXPIRED ON January 28, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                        Serial                        Issue
Number                        Number                         Date

5,083,314                   07/506,062                   01/28/92
5,083,322                   07/655,715                   01/28/92
5,083,328                   07/518,561                   01/28/92
5,083,329                   07/607,397                   01/28/92
5,083,332                   07/627,486                   01/28/92
5,083,333                   07/673,946                   01/28/92
5,083,340                   07/696,648                   01/28/92
5,083,349                   07/666,651                   01/28/92
5,083,357                   07/542,078                   01/28/92
5,083,358                   07/187,630                   01/28/92
5,083,360                   07/250,470                   01/28/92
5,083,369                   07/538,119                   01/28/92
5,083,373                   07/704,898                   01/28/92
5,083,388                   07/604,521                   01/28/92
5,083,396                   07/686,305                   01/28/92
5,083,401                   07/315,414                   01/28/92
5,083,403                   07/590,984                   01/28/92
5,083,411                   07/577,776                   01/28/92
5,083,417                   07/601,247                   01/28/92
5,083,424                   07/625,201                   01/28/92
5,083,438                   07/662,596                   01/28/92
5,083,440                   07/580,792                   01/28/92
5,083,450                   07/525,798                   01/28/92
5,083,462                   07/365,808                   01/28/92
5,083,470                   07/590,439                   01/28/92
5,083,471                   07/738,202                   01/28/92
5,083,475                   07/678,652                   01/28/92
5,083,477                   07/648,565                   01/28/92
5,083,482                   07/600,662                   01/28/92
5,083,486                   07/244,327                   01/28/92
5,083,487                   07/393,788                   01/28/92
5,083,494                   07/645,396                   01/28/92
5,083,495                   07/479,943                   01/28/92
5,083,496                   07/542,748                   01/28/92
5,083,497                   07/609,380                   01/28/92
5,083,498                   07/587,885                   01/28/92
5,083,500                   07/361,392                   01/28/92
5,083,508                   07/623,076                   01/28/92
5,083,510                   07/361,440                   01/28/92
5,083,515                   07/367,786                   01/28/92
5,083,517                   07/663,199                   01/28/92
5,083,529                   07/651,978                   01/28/92
5,083,532                   07/617,362                   01/28/92
5,083,534                   07/458,374                   01/28/92
5,083,535                   07/715,821                   01/28/92
5,083,540                   07/597,821                   01/28/92
5,083,549                   07/557,958                   01/28/92
5,083,557                   07/562,167                   01/28/92
5,083,570                   07/539,886                   01/28/92
5,083,574                   07/668,040                   01/28/92
5,083,575                   07/754,040                   01/28/92
5,083,577                   07/588,900                   01/28/92
5,083,586                   07/696,420                   01/28/92
5,083,598                   07/702,459                   01/28/92
5,083,599                   07/474,455                   01/28/92
5,083,604                   07/700,546                   01/28/92
5,083,610                   07/514,121                   01/28/92
5,083,613                   07/341,772                   01/28/92
5,083,615                   07/471,105                   01/28/92
5,083,618                   07/586,896                   01/28/92
5,083,621                   07/542,159                   01/28/92
5,083,624                   07/479,842                   01/28/92
5,083,625                   07/546,946                   01/28/92
5,083,627                   07/329,250                   01/28/92
5,083,628                   07/609,636                   01/28/92
5,083,633                   07/497,415                   01/28/92
5,083,636                   07/593,946                   01/28/92
5,083,638                   07/584,104                   01/28/92
5,083,647                   07/645,171                   01/28/92
5,083,648                   07/645,172                   01/28/92
5,083,656                   07/640,740                   01/28/92
5,083,670                   07/581,426                   01/28/92
5,083,671                   07/515,728                   01/28/92
5,083,676                   07/509,608                   01/28/92
5,083,681                   07/551,765                   01/28/92
5,083,686                   07/541,908                   01/28/92
5,083,687                   07/598,040                   01/28/92
5,083,690                   07/601,458                   01/28/92
5,083,704                   07/562,826                   01/28/92
5,083,706                   07/532,870                   01/28/92
5,083,719                   07/538,042                   01/28/92
5,083,720                   07/679,844                   01/28/92
5,083,725                   07/598,469                   01/28/92
5,083,732                   07/176,606                   01/28/92
5,083,735                   07/536,349                   01/28/92
5,083,739                   07/627,978                   01/28/92
5,083,745                   07/644,006                   01/28/92
5,083,749                   07/647,406                   01/28/92
5,083,752                   07/580,996                   01/28/92
5,083,753                   07/680,889                   01/28/92
5,083,756                   07/556,457                   01/28/92
5,083,758                   07/480,296                   01/28/92
5,083,759                   07/469,618                   01/28/92
5,083,771                   07/509,143                   01/28/92
5,083,774                   07/661,335                   01/28/92
5,083,775                   07/580,602                   01/28/92
5,083,779                   07/682,995                   01/28/92
5,083,788                   07/534,490                   01/28/92
5,083,790                   07/721,956                   01/28/92
5,083,792                   07/585,020                   01/28/92
5,083,795                   07/599,496                   01/28/92
5,083,802                   07/657,264                   01/28/92
5,083,804                   07/676,466                   01/28/92
5,083,806                   07/646,190                   01/28/92
5,083,817                   07/477,471                   01/28/92
5,083,818                   07/590,170                   01/28/92
5,083,822                   07/556,543                   01/28/92
5,083,825                   07/504,819                   01/28/92
5,083,827                   07/593,470                   01/28/92
5,083,833                   07/643,120                   01/28/92
5,083,841                   07/498,008                   01/28/92
5,083,845                   07/532,315                   01/28/92
5,083,858                   07/569,595                   01/28/92
5,083,863                   07/485,213                   01/28/92
5,083,865                   07/522,606                   01/28/92
5,083,872                   07/627,799                   01/28/92
5,083,878                   07/396,559                   01/28/92
5,083,882                   07/734,920                   01/28/92
5,083,883                   07/343,240                   01/28/92
5,083,892                   07/298,890                   01/28/92
5,083,901                   07/696,336                   01/28/92
5,083,909                   07/620,506                   01/28/92
5,083,910                   07/527,660                   01/28/92
5,083,911                   07/561,069                   01/28/92
5,083,915                   07/710,657                   01/28/92
5,083,917                   07/523,661                   01/28/92
5,083,921                   07/477,631                   01/28/92
5,083,925                   07/553,205                   01/28/92
5,083,931                   07/700,676                   01/28/92
5,083,934                   07/530,383                   01/28/92
5,083,937                   07/709,670                   01/28/92
5,083,943                   07/437,162                   01/28/92
5,083,947                   07/644,152                   01/28/92
5,083,948                   07/570,529                   01/28/92
5,083,949                   07/567,762                   01/28/92
5,083,950                   07/454,316                   01/28/92
5,083,953                   07/552,065                   01/28/92
5,083,954                   07/467,734                   01/28/92
5,083,955                   07/420,178                   01/28/92
5,083,963                   07/655,597                   01/28/92
5,083,966                   07/647,045                   01/28/92
5,083,970                   07/556,368                   01/28/92
5,083,978                   07/577,929                   01/28/92
5,083,979                   07/571,285                   01/28/92
5,083,985                   07/656,299                   01/28/92
5,083,991                   07/734,156                   01/28/92
5,083,993                   07/597,417                   01/28/92
5,084,005                   07/523,441                   01/28/92
5,084,013                   07/464,195                   01/28/92
5,084,017                   07/419,499                   01/28/92
5,084,019                   07/657,529                   01/28/92
5,084,020                   07/621,287                   01/28/92
5,084,026                   07/379,989                   01/28/92
5,084,034                   07/535,081                   01/28/92
5,084,041                   07/509,257                   01/28/92
5,084,043                   07/463,759                   01/28/92
5,084,045                   07/583,194                   01/28/92
5,084,053                   07/602,692                   01/28/92
5,084,060                   07/311,126                   01/28/92
5,084,063                   07/532,962                   01/28/92
5,084,069                   07/600,888                   01/28/92
5,084,073                   07/596,098                   01/28/92
5,084,074                   07/636,477                   01/28/92
5,084,075                   07/507,700                   01/28/92
5,084,076                   07/371,050                   01/28/92
5,084,079                   07/665,089                   01/28/92
5,084,094                   07/617,033                   01/28/92
5,084,096                   07/505,252                   01/28/92
5,084,097                   07/467,011                   01/28/92
5,084,098                   07/452,475                   01/28/92
5,084,102                   07/455,620                   01/28/92
5,084,107                   07/482,712                   01/28/92
5,084,110                   07/675,544                   01/28/92
5,084,128                   07/580,476                   01/28/92
5,084,135                   07/499,718                   01/28/92
5,084,138                   07/611,630                   01/28/92
5,084,140                   07/558,706                   01/28/92
5,084,141                   07/474,066                   01/28/92
5,084,142                   07/658,504                   01/28/92
5,084,146                   07/509,416                   01/28/92
5,084,147                   07/295,106                   01/28/92
5,084,159                   07/371,335                   01/28/92
5,084,163                   07/612,291                   01/28/92
5,084,166                   07/482,542                   01/28/92
5,084,168                   07/645,897                   01/28/92
5,084,177                   07/421,793                   01/28/92
5,084,189                   07/585,943                   01/28/92
5,084,194                   07/614,564                   01/28/92
5,084,195                   07/454,323                   01/28/92
5,084,198                   07/570,463                   01/28/92
5,084,199                   07/592,174                   01/28/92
5,084,201                   07/480,705                   01/28/92
5,084,209                   07/609,966                   01/28/92
5,084,212                   07/459,101                   01/28/92
5,084,216                   07/638,538                   01/28/92
5,084,226                   07/522,461                   01/28/92
5,084,234                   07/454,604                   01/28/92
5,084,245                   07/630,432                   01/28/92
5,084,246                   06/923,906                   01/28/92
5,084,247                   07/492,163                   01/28/92
5,084,248                   07/369,879                   01/28/92
5,084,251                   07/427,450                   01/28/92
5,084,253                   07/455,975                   01/28/92
5,084,256                   07/565,869                   01/28/92
5,084,259                   07/669,903                   01/28/92
5,084,261                   07/369,893                   01/28/92
5,084,267                   07/438,545                   01/28/92
5,084,269                   07/312,675                   01/28/92
5,084,276                   07/461,159                   01/28/92
5,084,288                   07/318,500                   01/28/92
5,084,289                   07/467,135                   01/28/92
5,084,299                   07/600,361                   01/28/92
5,084,300                   07/517,635                   01/28/92
5,084,301                   07/576,919                   01/28/92
5,084,303                   07/546,032                   01/28/92
5,084,304                   07/490,641                   01/28/92
5,084,310                   07/500,040                   01/28/92
5,084,312                   07/420,488                   01/28/92
5,084,321                   07/425,132                   01/28/92
5,084,325                   07/493,814                   01/28/92
5,084,331                   07/657,270                   01/28/92
5,084,332                   07/491,142                   01/28/92
5,084,344                   07/313,866                   01/28/92
5,084,348                   07/463,749                   01/28/92
5,084,354                   07/625,457                   01/28/92
5,084,357                   07/461,125                   01/28/92
5,084,358                   07/318,677                   01/28/92
5,084,378                   07/126,155                   01/28/92
5,084,383                   07/553,356                   01/28/92
5,084,386                   07/332,502                   01/28/92
5,084,398                   07/601,029                   01/28/92
5,084,411                   07/277,593                   01/28/92
5,084,423                   07/502,321                   01/28/92
5,084,425                   07/667,916                   01/28/92
5,084,432                   07/552,568                   01/28/92
5,084,441                   07/232,697                   01/28/92
5,084,444                   07/712,781                   01/28/92
5,084,448                   07/561,140                   01/28/92
5,084,453                   07/265,458                   01/28/92
5,084,454                   07/434,689                   01/28/92
5,084,458                   07/610,142                   01/28/92
5,084,462                   07/545,048                   01/28/92
5,084,468                   07/392,271                   01/28/92
5,084,478                   07/337,862                   01/28/92
5,084,480                   07/383,243                   01/28/92
5,084,484                   07/534,272                   01/28/92
5,084,498                   07/596,552                   01/28/92
5,084,502                   07/515,745                   01/28/92
5,084,505                   07/363,492                   01/28/92
5,084,506                   07/128,315                   01/28/92
5,084,511                   07/376,739                   01/28/92
5,084,522                   07/152,720                   01/28/92
5,084,524                   07/407,166                   01/28/92
5,084,536                   07/371,517                   01/28/92
5,084,540                   07/616,767                   01/28/92
5,084,564                   07/335,942                   01/28/92
5,084,567                   07/549,525                   01/28/92
5,084,568                   07/628,242                   01/28/92
5,084,576                   07/626,644                   01/28/92
5,084,578                   07/491,589                   01/28/92
5,084,581                   07/629,762                   01/28/92
5,084,584                   07/593,586                   01/28/92
5,084,593                   07/627,583                   01/28/92
5,084,594                   07/563,487                   01/28/92
5,084,603                   07/683,050                   01/28/92
5,084,604                   07/521,207                   01/28/92
5,084,605                   07/614,919                   01/28/92
5,084,613                   07/658,549                   01/28/92
5,084,615                   07/511,421                   01/28/92
5,084,618                   07/609,871                   01/28/92
5,084,619                   07/742,202                   01/28/92
5,084,620                   07/637,416                   01/28/92
5,084,625                   07/644,050                   01/28/92
5,084,628                   07/551,897                   01/28/92
5,084,629                   07/520,110                   01/28/92
5,084,630                   07/328,333                   01/28/92
5,084,637                   07/358,321                   01/28/92
5,084,638                   07/666,963                   01/28/92
5,084,645                   07/443,522                   01/28/92
5,084,650                   07/668,859                   01/28/92
5,084,655                   07/618,777                   01/28/92
5,084,658                   07/676,026                   01/28/92
5,084,661                   07/107,501                   01/28/92
5,084,666                   07/602,023                   01/28/92
5,084,675                   07/565,951                   01/28/92
5,084,678                   07/487,687                   01/28/92
5,084,692                   07/707,263                   01/28/92
5,084,695                   07/548,370                   01/28/92
5,084,696                   07/645,236                   01/28/92
5,084,700                   07/650,330                   01/28/92
5,084,710                   07/616,641                   01/28/92
5,084,743                   07/494,239                   01/28/92
5,084,751                   07/708,844                   01/28/92
5,084,756                   07/569,587                   01/28/92
5,084,775                   07/407,754                   01/28/92
5,084,786                   07/224,655                   01/28/92
5,084,787                   07/490,229                   01/28/92
5,084,791                   07/717,874                   01/28/92
5,084,793                   07/448,723                   01/28/92
5,084,798                   07/538,353                   01/28/92
5,084,808                   07/626,992                   01/28/92
5,084,819                   07/592,182                   01/28/92
5,084,826                   07/557,074                   01/28/92
5,084,827                   07/452,775                   01/28/92
5,084,836                   07/399,555                   01/28/92
5,084,838                   07/391,783                   01/28/92
5,084,853                   07/482,501                   01/28/92
5,084,854                   07/466,560                   01/28/92
5,084,855                   07/246,486                   01/28/92
5,084,868                   07/193,698                   01/28/92
5,084,873                   07/302,842                   01/28/92
5,084,874                   07/542,665                   01/28/92
5,084,875                   07/450,605                   01/28/92
5,084,885                   07/465,267                   01/28/92
5,084,886                   07/591,290                   01/28/92
5,084,893                   07/539,698                   01/28/92
5,084,897                   07/343,553                   01/28/92
5,084,901                   07/455,077                   01/28/92
5,084,904                   07/431,064                   01/28/92
5,084,905                   07/415,889                   01/28/92
5,084,908                   07/475,485                   01/28/92
5,084,910                   07/628,753                   01/28/92

                   PATENTS WHICH EXPIRED ON January 30, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                        Serial                        Issue
Number                        Number                         Date

5,487,190                   08/253,997                   01/30/96
5,487,192                   08/344,214                   01/30/96
5,487,211                   08/109,222                   01/30/96
5,487,237                   08/284,390                   01/30/96
5,487,248                   08/155,526                   01/30/96
5,487,258                   08/347,766                   01/30/96
5,487,276                   08/239,981                   01/30/96
5,487,278                   08/239,299                   01/30/96
5,487,282                   08/108,747                   01/30/96
5,487,288                   08/374,896                   01/30/96
5,487,291                   08/247,007                   01/30/96
5,487,292                   08/262,689                   01/30/96
5,487,293                   08/324,746                   01/30/96
5,487,296                   08/158,613                   01/30/96
5,487,302                   08/396,092                   01/30/96
5,487,303                   08/087,652                   01/30/96
5,487,311                   08/416,554                   01/30/96
5,487,312                   08/320,051                   01/30/96
5,487,315                   08/093,232                   01/30/96
5,487,317                   08/180,075                   01/30/96
5,487,318                   08/353,222                   01/30/96
5,487,319                   08/139,761                   01/30/96
5,487,320                   08/031,759                   01/30/96
5,487,322                   07/563,915                   01/30/96
5,487,326                   07/917,784                   01/30/96
5,487,330                   08/391,214                   01/30/96
5,487,344                   08/198,635                   01/30/96
5,487,346                   08/179,249                   01/30/96
5,487,347                   08/340,636                   01/30/96
5,487,349                   08/211,467                   01/30/96
5,487,357                   08/190,028                   01/30/96
5,487,361                   08/344,012                   01/30/96
5,487,364                   08/216,981                   01/30/96
5,487,378                   08/078,151                   01/30/96
5,487,379                   08/332,765                   01/30/96
5,487,383                   08/048,911                   01/30/96
5,487,395                   08/383,617                   01/30/96
5,487,397                   08/349,995                   01/30/96
5,487,400                   08/212,050                   01/30/96
5,487,406                   08/315,510                   01/30/96
5,487,408                   08/346,870                   01/30/96
5,487,413                   08/324,615                   01/30/96
5,487,422                   08/186,290                   01/30/96
5,487,436                   08/183,048                   01/30/96
5,487,441                   08/061,884                   01/30/96
5,487,442                   08/318,131                   01/30/96
5,487,457                   08/264,158                   01/30/96
5,487,461                   08/043,485                   01/30/96
5,487,463                   08/276,007                   01/30/96
5,487,472                   08/269,109                   01/30/96
5,487,475                   08/352,398                   01/30/96
5,487,476                   08/219,280                   01/30/96
5,487,480                   08/257,704                   01/30/96
5,487,482                   08/182,638                   01/30/96
5,487,485                   08/421,535                   01/30/96
5,487,487                   08/283,204                   01/30/96
5,487,489                   08/342,888                   01/30/96
5,487,495                   08/226,217                   01/30/96
5,487,505                   08/325,359                   01/30/96
5,487,510                   08/215,916                   01/30/96
5,487,517                   08/353,440                   01/30/96
5,487,521                   08/404,319                   01/30/96
5,487,523                   08/109,725                   01/30/96
5,487,530                   08/197,517                   01/30/96
5,487,534                   08/315,697                   01/30/96
5,487,536                   08/237,775                   01/30/96
5,487,538                   08/288,067                   01/30/96
5,487,541                   08/262,544                   01/30/96
5,487,548                   08/326,810                   01/30/96
5,487,549                   08/328,016                   01/30/96
5,487,551                   08/336,398                   01/30/96
5,487,552                   08/266,354                   01/30/96
5,487,553                   08/303,175                   01/30/96
5,487,566                   08/283,025                   01/30/96
5,487,577                   08/266,976                   01/30/96
5,487,578                   08/432,684                   01/30/96
5,487,581                   08/430,127                   01/30/96
5,487,582                   08/354,524                   01/30/96
5,487,583                   08/158,309                   01/30/96
5,487,588                   08/215,808                   01/30/96
5,487,593                   08/344,766                   01/30/96
5,487,594                   08/346,726                   01/30/96
5,487,601                   08/098,954                   01/30/96
5,487,607                   08/176,459                   01/30/96
5,487,610                   08/374,516                   01/30/96
5,487,617                   08/199,549                   01/30/96
5,487,618                   08/280,078                   01/30/96
5,487,635                   08/216,087                   01/30/96
5,487,642                   08/262,179                   01/30/96
5,487,648                   08/310,309                   01/30/96
5,487,655                   08/226,598                   01/30/96
5,487,662                   08/216,148                   01/30/96
5,487,666                   08/189,834                   01/30/96
5,487,668                   08/150,394                   01/30/96
5,487,671                   08/007,242                   01/30/96
5,487,674                   08/085,806                   01/30/96
5,487,679                   08/247,600                   01/30/96
5,487,691                   08/213,699                   01/30/96
5,487,696                   08/119,246                   01/30/96
5,487,709                   08/249,958                   01/30/96
5,487,714                   08/155,008                   01/30/96
5,487,719                   08/181,417                   01/30/96
5,487,722                   08/237,720                   01/30/96
5,487,723                   08/175,925                   01/30/96
5,487,738                   08/414,436                   01/30/96
5,487,751                   08/334,624                   01/30/96
5,487,773                   08/317,361                   01/30/96
5,487,779                   08/155,586                   01/30/96
5,487,784                   08/343,127                   01/30/96
5,487,788                   08/239,887                   01/30/96
5,487,794                   08/245,231                   01/30/96
5,487,805                   08/216,845                   01/30/96
5,487,806                   08/077,899                   01/30/96
5,487,820                   08/361,137                   01/30/96
5,487,823                   08/233,171                   01/30/96
5,487,829                   08/205,364                   01/30/96
5,487,832                   08/219,811                   01/30/96
5,487,833                   08/275,800                   01/30/96
5,487,846                   08/317,778                   01/30/96
5,487,851                   08/170,391                   01/30/96
5,487,862                   08/245,599                   01/30/96
5,487,869                   08/126,183                   01/30/96
5,487,871                   07/969,000                   01/30/96
5,487,872                   08/228,415                   01/30/96
5,487,874                   08/221,103                   01/30/96
5,487,877                   08/256,990                   01/30/96
5,487,899                   08/190,330                   01/30/96
5,487,909                   08/324,551                   01/30/96
5,487,910                   08/346,103                   01/30/96
5,487,918                   07/837,216                   01/30/96
5,487,925                   08/384,409                   01/30/96
5,487,936                   08/217,148                   01/30/96
5,487,956                   08/308,014                   01/30/96
5,487,957                   07/939,854                   01/30/96
5,487,964                   08/255,506                   01/30/96
5,487,974                   08/081,673                   01/30/96
5,487,981                   08/099,384                   01/30/96
5,487,984                   06/811,654                   01/30/96
5,488,021                   08/168,170                   01/30/96
5,488,050                   08/154,396                   01/30/96
5,488,062                   08/287,681                   01/30/96
5,488,100                   08/407,955                   01/30/96
5,488,101                   07/894,561                   01/30/96
5,488,112                   08/392,638                   01/30/96
5,488,113                   08/379,042                   01/30/96
5,488,119                   08/135,775                   01/30/96
5,488,122                   08/045,466                   01/30/96
5,488,127                   08/407,956                   01/30/96
5,488,130                   08/414,706                   01/30/96
5,488,137                   08/215,606                   01/30/96
5,488,140                   08/483,628                   01/30/96
5,488,146                   08/362,357                   01/30/96
5,488,151                   08/250,830                   01/30/96
5,488,153                   08/262,955                   01/30/96
5,488,162                   08/176,985                   01/30/96
5,488,163                   08/360,082                   01/30/96
5,488,169                   08/170,762                   01/30/96
5,488,171                   08/203,961                   01/30/96
5,488,177                   08/331,593                   01/30/96
5,488,192                   08/238,670                   01/30/96
5,488,195                   08/199,009                   01/30/96
5,488,196                   08/183,489                   01/30/96
5,488,198                   08/299,590                   01/30/96
5,488,208                   08/310,563                   01/30/96
5,488,221                   08/374,115                   01/30/96
5,488,227                   08/320,674                   01/30/96
5,488,229                   08/317,314                   01/30/96
5,488,231                   08/352,628                   01/30/96
5,488,259                   08/334,077                   01/30/96
5,488,276                   08/170,817                   01/30/96
5,488,280                   08/233,119                   01/30/96
5,488,284                   07/953,906                   01/30/96
5,488,290                   08/115,596                   01/30/96
5,488,333                   08/418,979                   01/30/96
5,488,334                   08/417,767                   01/30/96
5,488,344                   07/971,000                   01/30/96
5,488,347                   08/251,117                   01/30/96
5,488,349                   08/161,656                   01/30/96
5,488,356                   08/220,128                   01/30/96
5,488,360                   08/298,218                   01/30/96
5,488,363                   08/195,342                   01/30/96
5,488,364                   08/203,998                   01/30/96
5,488,368                   08/181,605                   01/30/96
5,488,371                   08/236,500                   01/30/96
5,488,383                   08/181,747                   01/30/96
5,488,406                   08/065,606                   01/30/96
5,488,426                   08/061,663                   01/30/96
5,488,432                   08/361,172                   01/30/96
5,488,439                   08/490,337                   01/30/96
5,488,448                   08/336,599                   01/30/96
5,488,457                   08/288,044                   01/30/96
5,488,484                   08/260,630                   01/30/96
5,488,493                   08/146,244                   01/30/96
5,488,505                   07/955,058                   01/30/96
5,488,515                   08/355,535                   01/30/96
5,488,517                   08/131,506                   01/30/96
5,488,522                   08/337,740                   01/30/96
5,488,526                   08/221,786                   01/30/96
5,488,559                   08/100,804                   01/30/96
5,488,563                   08/041,870                   01/30/96
5,488,565                   08/068,768                   01/30/96
5,488,578                   08/296,395                   01/30/96
5,488,579                   08/235,735                   01/30/96
5,488,589                   08/324,640                   01/30/96
5,488,596                   08/018,114                   01/30/96
5,488,597                   08/229,653                   01/30/96
5,488,607                   08/233,205                   01/30/96
5,488,609                   08/496,350                   01/30/96
5,488,615                   07/486,315                   01/30/96
5,488,626                   07/640,653                   01/30/96
5,488,638                   08/198,662                   01/30/96
5,488,643                   08/241,441                   01/30/96
5,488,656                   08/212,917                   01/30/96
5,488,684                   08/311,701                   01/30/96
5,488,687                   07/946,082                   01/30/96
5,488,692                   08/289,181                   01/30/96
5,488,694                   07/937,639                   01/30/96
5,488,698                   07/972,113                   01/30/96
5,488,699                   08/065,752                   01/30/96
5,488,713                   08/098,757                   01/30/96
5,488,732                   08/328,572                   01/30/96