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 main-
tenance 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 ap-
plicable surcharge.

                   PATENTS WHICH EXPIRED ON December 8, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,710,996                   06/895,872                   12/08/87
4,711,016                   06/550,083                   12/08/87
4,711,025                   06/860,004                   12/08/87
4,711,034                   06/929,042                   12/08/87
4,711,041                   06/876,883                   12/08/87
4,711,050                   06/849,022                   12/08/87
4,711,052                   06/937,543                   12/08/87
4,711,063                   06/852,561                   12/08/87
4,711,064                   07/007,112                   12/08/87
4,711,076                   06/836,250                   12/08/87
4,711,085                   06/830,138                   12/08/87
4,711,087                   06/877,493                   12/08/87
4,711,091                   07/015,979                   12/08/87
4,711,093                   07/019,924                   12/08/87
4,711,100                   07/014,205                   12/08/87
4,711,101                   06/890,265                   12/08/87
4,711,105                   06/793,339                   12/08/87
4,711,108                   06/878,395                   12/08/87
4,711,113                   06/873,111                   12/08/87
4,711,131                   06/815,847                   12/08/87
4,711,133                   06/862,351                   12/08/87
4,711,134                   06/764,075                   12/08/87
4,711,138                   06/833,377                   12/08/87
4,711,151                   06/824,559                   12/08/87
4,711,153                   06/941,909                   12/08/87
4,711,156                   07/006,357                   12/08/87
4,711,157                   06/907,231                   12/08/87
4,711,158                   06/807,595                   12/08/87
4,711,166                   07/022,367                   12/08/87
4,711,167                   06/769,689                   12/08/87
4,711,168                   06/808,935                   12/08/87
4,711,173                   06/823,345                   12/08/87
4,711,197                   06/919,736                   12/08/87
4,711,211                   06/883,294                   12/08/87
4,711,219                   06/889,080                   12/08/87
4,711,227                   06/896,981                   12/08/87
4,711,233                   06/748,856                   12/08/87
4,711,255                   06/907,555                   12/08/87
4,711,261                   06/798,984                   12/08/87
4,711,265                   07/026,192                   12/08/87
4,711,277                   06/401,254                   12/08/87
4,711,282                   06/871,716                   12/08/87
4,711,284                   06/719,758                   12/08/87
4,711,286                   06/843,432                   12/08/87
4,711,287                   06/830,730                   12/08/87
4,711,292                   07/037,613                   12/08/87
4,711,297                   06/913,745                   12/08/87
4,711,298                   06/914,571                   12/08/87
4,711,313                   06/943,126                   12/08/87
4,711,319                   06/943,631                   12/08/87
4,711,322                   06/863,482                   12/08/87
4,711,336                   06/811,096                   12/08/87
4,711,365                   07/012,252                   12/08/87
4,711,374                   06/907,821                   12/08/87
4,711,375                   06/856,990                   12/08/87
4,711,380                   06/897,464                   12/08/87
4,711,382                   06/920,274                   12/08/87
4,711,384                   07/008,046                   12/08/87
4,711,385                   06/932,658                   12/08/87
4,711,397                   06/338,799                   12/08/87
4,711,408                   07/002,976                   12/08/87
4,711,410                   06/878,603                   12/08/87
4,711,423                   06/853,180                   12/08/87
4,711,424                   06/383,871                   12/08/87
4,711,425                   06/898,187                   12/08/87
4,711,435                   06/891,411                   12/08/87
4,711,438                   06/861,132                   12/08/87
4,711,440                   06/931,054                   12/08/87
4,711,442                   07/029,349                   12/08/87
4,711,450                   06/738,447                   12/08/87
4,711,454                   06/923,346                   12/08/87
4,711,456                   06/936,866                   12/08/87
4,711,459                   06/946,779                   12/08/87
4,711,462                   06/880,347                   12/08/87
4,711,469                   06/884,477                   12/08/87
4,711,472                   06/902,580                   12/08/87
4,711,473                   06/912,822                   12/08/87
4,711,479                   06/696,118                   12/08/87
4,711,485                   06/788,955                   12/08/87
4,711,493                   06/831,179                   12/08/87
4,711,494                   06/939,176                   12/08/87
4,711,497                   06/745,421                   12/08/87
4,711,501                   06/759,361                   12/08/87
4,711,506                   07/008,065                   12/08/87
4,711,509                   06/804,934                   12/08/87
4,711,516                   06/323,757                   12/08/87
4,711,517                   06/791,437                   12/08/87
4,711,536                   06/759,055                   12/08/87
4,711,537                   06/873,360                   12/08/87
4,711,539                   06/746,178                   12/08/87
4,711,540                   06/688,586                   12/08/87
4,711,541                   06/695,900                   12/08/87
4,711,553                   06/893,636                   12/08/87
4,711,559                   06/925,065                   12/08/87
4,711,561                   06/919,732                   12/08/87
4,711,569                   06/881,460                   12/08/87
4,711,570                   06/940,067                   12/08/87
4,711,571                   07/028,026                   12/08/87
4,711,586                   06/876,373                   12/08/87
4,711,599                   06/805,475                   12/08/87
4,711,600                   06/689,717                   12/08/87
4,711,617                   07/038,166                   12/08/87
4,711,618                   07/056,542                   12/08/87
4,711,619                   06/933,664                   12/08/87
4,711,622                   06/744,056                   12/08/87
4,711,626                   06/746,187                   12/08/87
4,711,628                   06/887,860                   12/08/87
4,711,630                   06/849,405                   12/08/87
4,711,632                   06/891,779                   12/08/87
4,711,633                   06/846,006                   12/08/87
4,711,642                   06/906,352                   12/08/87
4,711,645                   06/828,008                   12/08/87
4,711,646                   07/030,705                   12/08/87
4,711,650                   06/903,540                   12/08/87
4,711,652                   06/840,422                   12/08/87
4,711,674                   06/926,530                   12/08/87
4,711,680                   06/497,287                   12/08/87
4,711,683                   07/023,136                   12/08/87
4,711,698                   06/755,140                   12/08/87
4,711,701                   06/908,071                   12/08/87
4,711,707                   07/003,821                   12/08/87
4,711,717                   06/853,426                   12/08/87
4,711,727                   06/891,472                   12/08/87
4,711,742                   07/002,529                   12/08/87
4,711,744                   06/848,409                   12/08/87
4,711,754                   06/788,981                   12/08/87
4,711,762                   06/421,341                   12/08/87
4,711,769                   06/893,324                   12/08/87
4,711,773                   07/028,001                   12/08/87
4,711,776                   06/792,198                   12/08/87
4,711,779                   06/881,091                   12/08/87
4,711,781                   06/745,170                   12/08/87
4,711,791                   06/892,514                   12/08/87
4,711,794                   06/732,570                   12/08/87
4,711,795                   06/910,269                   12/08/87
4,711,796                   06/880,267                   12/08/87
4,711,801                   06/802,740                   12/08/87
4,711,803                   06/768,058                   12/08/87
4,711,831                   07/007,030                   12/08/87
4,711,834                   06/721,183                   12/08/87
4,711,839                   06/690,556                   12/08/87
4,711,841                   06/659,424                   12/08/87
4,711,849                   06/667,254                   12/08/87
4,711,854                   06/857,011                   12/08/87
4,711,858                   06/875,835                   12/08/87
4,711,864                   06/721,894                   12/08/87
4,711,865                   06/944,306                   12/08/87
4,711,866                   06/826,244                   12/08/87
4,711,878                   06/826,265                   12/08/87
4,711,891                   06/872,779                   12/08/87
4,711,894                   06/819,779                   12/08/87
4,711,895                   06/791,156                   12/08/87
4,711,900                   06/888,616                   12/08/87
4,711,903                   06/824,984                   12/08/87
4,711,905                   06/746,554                   12/08/87
4,711,909                   07/033,680                   12/08/87
4,711,910                   06/922,629                   12/08/87
4,711,915                   06/848,535                   12/08/87
4,711,919                   06/701,064                   12/08/87
4,711,929                   06/934,824                   12/08/87
4,711,933                   06/928,954                   12/08/87
4,711,948                   06/913,395                   12/08/87
4,711,960                   06/823,343                   12/08/87
4,711,975                   06/863,828                   12/08/87
4,711,978                   07/008,446                   12/08/87
4,711,981                   06/815,090                   12/08/87
4,711,983                   06/882,223                   12/08/87
4,711,985                   06/946,264                   12/08/87
4,711,994                   06/819,805                   12/08/87
4,712,003                   07/018,740                   12/08/87
4,712,014                   06/871,347                   12/08/87
4,712,020                   06/876,984                   12/08/87
4,712,024                   06/766,187                   12/08/87
4,712,027                   06/842,527                   12/08/87
4,712,031                   06/930,685                   12/08/87
4,712,035                   06/796,779                   12/08/87
4,712,040                   06/799,526                   12/08/87
4,712,047                   06/879,730                   12/08/87
4,712,053                   06/906,559                   12/08/87
4,712,060                   06/902,187                   12/08/87
4,712,071                   07/017,937                   12/08/87
4,712,089                   06/786,770                   12/08/87
4,712,091                   06/811,237                   12/08/87
4,712,095                   06/891,630                   12/08/87
4,712,105                   06/729,008                   12/08/87
4,712,115                   06/860,008                   12/08/87
4,712,125                   06/661,999                   12/08/87
4,712,129                   06/781,175                   12/08/87
4,712,130                   06/901,631                   12/08/87
4,712,140                   06/840,627                   12/08/87
4,712,141                   06/841,466                   12/08/87
4,712,146                   06/741,178                   12/08/87
4,712,152                   06/941,048                   12/08/87
4,712,154                   06/880,643                   12/08/87
4,712,163                   06/297,319                   12/08/87
4,712,169                   06/929,469                   12/08/87
4,712,174                   06/603,731                   12/08/87
4,712,185                   06/727,910                   12/08/87
4,712,187                   06/723,288                   12/08/87
4,712,191                   06/516,020                   12/08/87
4,712,198                   06/745,228                   12/08/87
4,712,209                   06/807,082                   12/08/87
4,712,214                   06/817,699                   12/08/87
4,712,216                   06/789,195                   12/08/87
4,712,219                   06/716,222                   12/08/87
4,712,223                   06/917,335                   12/08/87
4,712,224                   06/917,343                   12/08/87
4,712,227                   06/781,451                   12/08/87
4,712,230                   06/869,350                   12/08/87
4,712,235                   06/672,968                   12/08/87
4,712,237                   06/665,697                   12/08/87
4,712,242                   06/484,730                   12/08/87
4,712,243                   06/608,279                   12/08/87

                   PATENTS WHICH EXPIRED ON December 3, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,068,920                   07/642,810                   12/03/91
5,068,926                   07/474,337                   12/03/91
5,068,933                   07/610,016                   12/03/91
5,068,938                   07/581,899                   12/03/91
5,068,939                   07/457,904                   12/03/91
5,068,943                   07/634,443                   12/03/91
5,068,948                   07/303,247                   12/03/91
5,068,951                   07/531,374                   12/03/91
5,068,954                   07/581,036                   12/03/91
5,068,959                   07/582,799                   12/03/91
5,068,960                   07/460,752                   12/03/91
5,068,968                   07/637,035                   12/03/91
5,068,970                   07/495,440                   12/03/91
5,068,971                   07/497,964                   12/03/91
5,068,977                   07/560,820                   12/03/91
5,068,983                   07/621,630                   12/03/91
5,068,985                   07/441,016                   12/03/91
5,068,988                   07/478,955                   12/03/91
5,068,989                   07/551,299                   12/03/91
5,068,990                   07/602,528                   12/03/91
5,068,996                   07/503,473                   12/03/91
5,068,997                   07/601,355                   12/03/91
5,068,998                   07/404,542                   12/03/91
5,069,008                   07/379,628                   12/03/91
5,069,011                   07/506,869                   12/03/91
5,069,014                   07/460,558                   12/03/91
5,069,019                   07/583,840                   12/03/91
5,069,021                   07/559,898                   12/03/91
5,069,024                   07/609,590                   12/03/91
5,069,026                   07/594,549                   12/03/91
5,069,035                   07/578,576                   12/03/91
5,069,038                   07/265,783                   12/03/91
5,069,040                   07/604,863                   12/03/91
5,069,053                   07/361,423                   12/03/91
5,069,054                   07/399,897                   12/03/91
5,069,057                   07/459,312                   12/03/91
5,069,061                   07/459,405                   12/03/91
5,069,066                   07/521,594                   12/03/91
5,069,068                   07/534,972                   12/03/91
5,069,082                   07/520,105                   12/03/91
5,069,084                   07/662,577                   12/03/91
5,069,087                   07/392,537                   12/03/91
5,069,089                   07/585,668                   12/03/91
5,069,094                   07/093,591                   12/03/91
5,069,101                   07/597,010                   12/03/91
5,069,110                   07/682,632                   12/03/91
5,069,115                   07/553,618                   12/03/91
5,069,116                   07/426,104                   12/03/91
5,069,118                   07/465,461                   12/03/91
5,069,119                   07/605,246                   12/03/91
5,069,129                   07/610,089                   12/03/91
5,069,132                   07/629,561                   12/03/91
5,069,133                   07/576,576                   12/03/91
5,069,140                   07/254,682                   12/03/91
5,069,155                   07/358,355                   12/03/91
5,069,158                   07/606,538                   12/03/91
5,069,161                   07/675,302                   12/03/91
5,069,164                   07/475,956                   12/03/91
5,069,167                   07/610,577                   12/03/91
5,069,168                   07/627,193                   12/03/91
5,069,169                   07/613,736                   12/03/91
5,069,190                   07/693,620                   12/03/91
5,069,193                   07/555,279                   12/03/91
5,069,195                   07/365,458                   12/03/91
5,069,196                   07/571,735                   12/03/91
5,069,202                   07/609,260                   12/03/91
5,069,204                   07/569,071                   12/03/91
5,069,206                   07/535,515                   12/03/91
5,069,207                   07/556,317                   12/03/91
5,069,218                   07/392,962                   12/03/91
5,069,219                   07/454,025                   12/03/91
5,069,223                   07/480,050                   12/03/91
5,069,233                   07/605,441                   12/03/91
5,069,234                   07/621,310                   12/03/91
5,069,245                   07/529,532                   12/03/91
5,069,246                   07/402,699                   12/03/91
5,069,250                   07/581,281                   12/03/91
5,069,253                   07/461,820                   12/03/91
5,069,256                   07/447,836                   12/03/91
5,069,258                   07/604,337                   12/03/91
5,069,259                   07/608,835                   12/03/91
5,069,265                   07/499,029                   12/03/91
5,069,266                   07/701,578                   12/03/91
5,069,277                   07/492,456                   12/03/91
5,069,285                   07/284,087                   12/03/91
5,069,286                   07/516,177                   12/03/91
5,069,289                   07/539,425                   12/03/91
5,069,292                   07/585,977                   12/03/91
5,069,295                   07/506,980                   12/03/91
5,069,304                   07/321,784                   12/03/91
5,069,310                   07/675,135                   12/03/91
5,069,311                   07/534,530                   12/03/91
5,069,313                   07/468,883                   12/03/91
5,069,315                   07/545,552                   12/03/91
5,069,319                   07/512,750                   12/03/91
5,069,325                   07/386,510                   12/03/91
5,069,328                   07/535,120                   12/03/91
5,069,331                   07/498,899                   12/03/91
5,069,336                   07/578,784                   12/03/91
5,069,344                   07/669,950                   12/03/91
5,069,348                   07/394,230                   12/03/91
5,069,352                   07/701,585                   12/03/91
5,069,356                   07/611,692                   12/03/91
5,069,363                   07/496,903                   12/03/91
5,069,373                   07/580,589                   12/03/91
5,069,375                   07/526,891                   12/03/91
5,069,385                   07/536,700                   12/03/91
5,069,388                   07/491,818                   12/03/91
5,069,396                   07/511,265                   12/03/91
5,069,397                   06/781,864                   12/03/91
5,069,412                   07/698,278                   12/03/91
5,069,413                   07/431,224                   12/03/91
5,069,415                   07/556,998                   12/03/91
5,069,416                   07/629,276                   12/03/91
5,069,425                   07/595,091                   12/03/91
5,069,429                   07/648,830                   12/03/91
5,069,432                   07/505,172                   12/03/91
5,069,433                   07/630,008                   12/03/91
5,069,438                   07/604,266                   12/03/91
5,069,439                   07/575,483                   12/03/91
5,069,441                   07/388,522                   12/03/91
5,069,447                   07/618,161                   12/03/91
5,069,448                   07/623,320                   12/03/91
5,069,449                   07/470,578                   12/03/91
5,069,450                   07/642,410                   12/03/91
5,069,452                   07/574,592                   12/03/91
5,069,457                   07/171,761                   12/03/91
5,069,464                   07/441,519                   12/03/91
5,069,467                   07/526,510                   12/03/91
5,069,468                   07/567,166                   12/03/91
5,069,475                   07/575,553                   12/03/91
5,069,477                   07/569,917                   12/03/91
5,069,478                   07/556,967                   12/03/91
5,069,483                   07/537,359                   12/03/91
5,069,489                   07/496,659                   12/03/91
5,069,495                   07/453,608                   12/03/91
5,069,497                   07/651,196                   12/03/91
5,069,500                   07/525,603                   12/03/91
5,069,510                   07/035,644                   12/03/91
5,069,512                   07/344,607                   12/03/91
5,069,524                   07/573,864                   12/03/91
5,069,525                   07/421,848                   12/03/91
5,069,527                   07/511,817                   12/03/91
5,069,547                   07/576,270                   12/03/91
5,069,550                   07/587,102                   12/03/91
5,069,553                   07/621,859                   12/03/91
5,069,558                   07/614,634                   12/03/91
5,069,559                   07/642,909                   12/03/91
5,069,569                   07/698,164                   12/03/91
5,069,572                   07/461,921                   12/03/91
5,069,573                   07/639,918                   12/03/91
5,069,574                   07/439,273                   12/03/91
5,069,587                   07/537,179                   12/03/91
5,069,594                   07/523,479                   12/03/91
5,069,596                   07/550,409                   12/03/91
5,069,597                   07/464,961                   12/03/91
5,069,603                   07/688,840                   12/03/91
5,069,614                   07/524,058                   12/03/91
5,069,623                   07/503,235                   12/03/91
5,069,627                   07/540,038                   12/03/91
5,069,630                   07/591,270                   12/03/91
5,069,632                   07/442,976                   12/03/91
5,069,636                   07/601,023                   12/03/91
5,069,646                   07/550,398                   12/03/91
5,069,647                   07/511,342                   12/03/91
5,069,648                   07/605,375                   12/03/91
5,069,649                   07/615,139                   12/03/91
5,069,650                   07/484,225                   12/03/91
5,069,655                   07/625,909                   12/03/91
5,069,657                   07/518,174                   12/03/91
5,069,659                   07/454,278                   12/03/91
5,069,660                   07/447,269                   12/03/91
5,069,669                   07/448,674                   12/03/91
5,069,685                   07/562,298                   12/03/91
5,069,686                   07/564,030                   12/03/91
5,069,688                   07/435,121                   12/03/91
5,069,696                   07/618,889                   12/03/91
5,069,702                   07/632,199                   12/03/91
5,069,707                   07/492,914                   12/03/91
5,069,715                   07/503,280                   12/03/91
5,069,717                   07/637,084                   12/03/91
5,069,719                   07/631,465                   12/03/91
5,069,721                   07/497,254                   12/03/91
5,069,722                   07/548,554                   12/03/91
5,069,723                   07/433,768                   12/03/91
5,069,728                   07/543,581                   12/03/91
5,069,734                   07/539,251                   12/03/91
5,069,736                   07/569,479                   12/03/91
5,069,738                   07/464,599                   12/03/91
5,069,748                   07/644,131                   12/03/91
5,069,750                   07/507,734                   12/03/91
5,069,751                   07/564,656                   12/03/91
5,069,754                   07/481,051                   12/03/91
5,069,755                   07/512,165                   12/03/91
5,069,756                   07/618,304                   12/03/91
5,069,766                   07/631,804                   12/03/91
5,069,768                   07/636,005                   12/03/91
5,069,774                   07/469,535                   12/03/91
5,069,777                   07/579,820                   12/03/91
5,069,778                   07/611,835                   12/03/91
5,069,797                   07/637,028                   12/03/91
5,069,802                   07/614,060                   12/03/91
5,069,805                   07/583,775                   12/03/91
5,069,806                   07/664,392                   12/03/91
5,069,807                   07/437,646                   12/03/91
5,069,812                   07/624,811                   12/03/91
5,069,815                   07/444,226                   12/03/91
5,069,816                   07/547,387                   12/03/91
5,069,817                   07/301,423                   12/03/91
5,069,822                   07/335,430                   12/03/91
5,069,825                   07/588,540                   12/03/91
5,069,831                   07/288,654                   12/03/91
5,069,832                   07/599,111                   12/03/91
5,069,833                   07/654,185                   12/03/91
5,069,836                   07/389,615                   12/03/91
5,069,837                   07/490,038                   12/03/91
5,069,838                   07/501,965                   12/03/91
5,069,852                   07/433,204                   12/03/91
5,069,858                   07/552,871                   12/03/91
5,069,860                   07/548,793                   12/03/91
5,069,861                   07/436,984                   12/03/91
5,069,866                   07/531,259                   12/03/91
5,069,868                   07/619,339                   12/03/91
5,069,877                   07/320,068                   12/03/91
5,069,885                   07/512,311                   12/03/91
5,069,886                   07/590,436                   12/03/91
5,069,889                   07/556,045                   12/03/91
5,069,891                   07/502,254                   12/03/91
5,069,894                   07/545,322                   12/03/91
5,069,901                   07/151,736                   12/03/91
5,069,902                   07/195,600                   12/03/91
5,069,903                   07/629,036                   12/03/91
5,069,910                   07/366,437                   12/03/91
5,069,915                   07/566,642                   12/03/91
5,069,919                   07/600,658                   12/03/91
5,069,923                   07/583,146                   12/03/91
5,069,925                   07/534,440                   12/03/91
5,069,926                   07/602,672                   12/03/91
5,069,930                   07/501,230                   12/03/91
5,069,936                   07/390,628                   12/03/91
5,069,948                   07/561,962                   12/03/91
5,069,952                   07/688,243                   12/03/91
5,069,954                   07/149,355                   12/03/91
5,069,960                   07/642,072                   12/03/91
5,069,963                   07/575,014                   12/03/91
5,069,980                   07/649,951                   12/03/91
5,069,986                   07/649,187                   12/03/91
5,069,988                   07/540,932                   12/03/91
5,070,000                   07/265,770                   12/03/91
5,070,005                   07/676,748                   12/03/91
5,070,011                   07/367,024                   12/03/91
5,070,013                   07/201,068                   12/03/91
5,070,018                   06/928,796                   12/03/91
5,070,021                   07/295,621                   12/03/91
5,070,023                   07/305,567                   12/03/91
5,070,025                   07/311,100                   12/03/91
5,070,026                   07/371,548                   12/03/91
5,070,029                   07/650,324                   12/03/91
5,070,035                   07/415,306                   12/03/91
5,070,036                   07/525,444                   12/03/91
5,070,039                   07/337,609                   12/03/91
5,070,040                   07/490,878                   12/03/91
5,070,041                   07/391,986                   12/03/91
5,070,046                   07/423,367                   12/03/91
5,070,053                   07/631,561                   12/03/91
5,070,061                   07/625,649                   12/03/91
5,070,063                   07/683,573                   12/03/91
5,070,066                   07/352,612                   12/03/91
5,070,070                   07/165,683                   12/03/91
5,070,073                   07/684,069                   12/03/91
5,070,089                   07/302,552                   12/03/91
5,070,090                   07/514,635                   12/03/91
5,070,091                   07/458,040                   12/03/91
5,070,094                   07/402,953                   12/03/91
5,070,100                   07/402,035                   12/03/91
5,070,107                   07/430,822                   12/03/91
5,070,108                   07/596,676                   12/03/91
5,070,110                   07/398,802                   12/03/91
5,070,112                   07/612,520                   12/03/91
5,070,116                   07/652,468                   12/03/91
5,070,120                   07/376,601                   12/03/91
5,070,122                   07/366,825                   12/03/91
5,070,127                   07/615,859                   12/03/91
5,070,128                   07/504,301                   12/03/91
5,070,130                   07/585,339                   12/03/91
5,070,141                   07/226,329                   12/03/91
5,070,146                   07/381,227                   12/03/91
5,070,147                   07/400,479                   12/03/91
5,070,151                   07/655,338                   12/03/91
5,070,152                   07/676,666                   12/03/91
5,070,157                   07/568,601                   12/03/91
5,070,162                   07/424,441                   12/03/91
5,070,166                   07/418,687                   12/03/91
5,070,167                   07/661,622                   12/03/91
5,070,170                   07/342,849                   12/03/91
5,070,173                   07/392,154                   12/03/91
5,070,174                   07/635,797                   12/03/91
5,070,185                   07/503,084                   12/03/91
5,070,189                   07/397,993                   12/03/91
5,070,193                   07/450,632                   12/03/91
5,070,196                   07/562,422                   12/03/91
5,070,203                   07/560,939                   12/03/91
5,070,211                   07/590,909                   12/03/91
5,070,220                   07/657,656                   12/03/91
5,070,221                   07/504,404                   12/03/91
5,070,222                   07/406,568                   12/03/91
5,070,223                   07/317,448                   12/03/91
5,070,230                   07/501,867                   12/03/91
5,070,239                   07/608,932                   12/03/91
5,070,243                   07/654,229                   12/03/91
5,070,244                   07/695,573                   12/03/91
5,070,258                   07/578,232                   12/03/91
5,070,273                   07/308,359                   12/03/91
5,070,274                   07/496,235                   12/03/91
5,070,276                   07/492,457                   12/03/91
5,070,288                   07/476,416                   12/03/91
5,070,290                   07/314,356                   12/03/91
5,070,299                   07/543,141                   12/03/91
5,070,300                   07/390,762                   12/03/91
5,070,302                   07/402,285                   12/03/91
5,070,314                   07/526,345                   12/03/91
5,070,320                   07/365,138                   12/03/91
5,070,326                   07/334,640                   12/03/91
5,070,328                   07/622,189                   12/03/91
5,070,332                   07/671,219                   12/03/91
5,070,333                   07/477,252                   12/03/91
5,070,334                   07/490,308                   12/03/91
5,070,341                   07/343,330                   12/03/91
5,070,343                   07/693,058                   12/03/91
5,070,350                   07/681,654                   12/03/91
5,070,370                   07/632,710                   12/03/91
5,070,371                   07/601,539                   12/03/91
5,070,374                   07/622,595                   12/03/91
5,070,376                   07/631,909                   12/03/91
5,070,379                   07/540,624                   12/03/91
5,070,395                   07/501,754                   12/03/91
5,070,404                   07/523,623                   12/03/91
5,070,412                   07/441,255                   12/03/91
5,070,417                   07/439,804                   12/03/91
5,070,423                   06/836,950                   12/03/91
5,070,425                   07/660,906                   12/03/91
5,070,426                   07/488,526                   12/03/91
5,070,431                   07/559,358                   12/03/91
5,070,433                   07/536,651                   12/03/91
5,070,436                   07/605,238                   12/03/91
5,070,438                   07/496,682                   12/03/91
5,070,440                   07/567,226                   12/03/91
5,070,442                   07/450,432                   12/03/91
5,070,448                   06/830,891                   12/03/91
5,070,464                   07/368,307                   12/03/91
5,070,468                   07/598,770                   12/03/91
5,070,469                   07/410,627                   12/03/91
5,070,471                   07/478,283                   12/03/91
5,070,472                   07/399,906                   12/03/91
5,070,483                   07/464,041                   12/03/91
5,070,495                   07/336,479                   12/03/91
5,070,501                   07/535,619                   12/03/91
5,070,504                   07/370,935                   12/03/91
5,070,509                   07/564,930                   12/03/91
5,070,513                   07/520,552                   12/03/91
5,070,518                   07/480,692                   12/03/91
5,070,520                   07/641,781                   12/03/91
5,070,521                   07/639,378                   12/03/91
5,070,530                   07/173,435                   12/03/91
5,070,539                   07/380,587                   12/03/91

                   PATENTS WHICH EXPIRED ON December 5, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,471,680                   08/179,772                   12/05/95
5,471,686                   08/178,499                   12/05/95
5,471,690                   08/312,455                   12/05/95
5,471,698                   08/157,305                   12/05/95
5,471,700                   08/351,940                   12/05/95
5,471,702                   08/372,270                   12/05/95
5,471,703                   08/243,255                   12/05/95
5,471,706                   08/134,986                   12/05/95
5,471,713                   08/216,430                   12/05/95
5,471,716                   08/261,414                   12/05/95
5,471,719                   08/058,136                   12/05/95
5,471,742                   08/300,618                   12/05/95
5,471,748                   08/241,293                   12/05/95
5,471,753                   08/235,471                   12/05/95
5,471,757                   08/236,450                   12/05/95
5,471,761                   08/335,484                   12/05/95
5,471,762                   08/254,528                   12/05/95
5,471,763                   08/293,012                   12/05/95
5,471,767                   08/252,884                   12/05/95
5,471,768                   08/225,763                   12/05/95
5,471,772                   08/086,154                   12/05/95
5,471,774                   08/036,957                   12/05/95
5,471,775                   08/167,340                   12/05/95
5,471,778                   08/071,245                   12/05/95
5,471,781                   08/314,138                   12/05/95
5,471,782                   08/236,191                   12/05/95
5,471,784                   08/208,891                   12/05/95
5,471,790                   08/224,888                   12/05/95
5,471,793                   08/349,619                   12/05/95
5,471,796                   07/897,834                   12/05/95
5,471,799                   08/260,692                   12/05/95
5,471,800                   08/103,836                   12/05/95
5,471,804                   07/902,901                   12/05/95
5,471,807                   08/162,343                   12/05/95
5,471,808                   08/140,387                   12/05/95
5,471,809                   08/189,584                   12/05/95
5,471,812                   08/091,812                   12/05/95
5,471,814                   08/275,591                   12/05/95
5,471,822                   07/769,124                   12/05/95
5,471,826                   08/190,804                   12/05/95
5,471,827                   08/170,271                   12/05/95
5,471,828                   08/058,291                   12/05/95
5,471,829                   08/183,599                   12/05/95
5,471,832                   08/207,619                   12/05/95
5,471,833                   08/132,734                   12/05/95
5,471,842                   08/292,126                   12/05/95
5,471,844                   08/343,141                   12/05/95
5,471,848                   08/177,742                   12/05/95
5,471,850                   08/273,378                   12/05/95
5,471,853                   08/285,160                   12/05/95
5,471,855                   08/297,853                   12/05/95
5,471,860                   08/237,606                   12/05/95
5,471,865                   08/118,511                   12/05/95
5,471,868                   08/338,239                   12/05/95
5,471,871                   08/264,020                   12/05/95
5,471,879                   08/120,083                   12/05/95
5,471,880                   08/234,192                   12/05/95
5,471,892                   08/230,660                   12/05/95
5,471,899                   08/260,462                   12/05/95
5,471,904                   08/081,108                   12/05/95
5,471,914                   08/345,959                   12/05/95
5,471,915                   08/347,923                   12/05/95
5,471,917                   08/405,048                   12/05/95
5,471,919                   08/090,774                   12/05/95
5,471,921                   08/098,291                   12/05/95
5,471,936                   08/104,803                   12/05/95
5,471,949                   08/330,785                   12/05/95
5,471,951                   08/312,539                   12/05/95
5,471,961                   08/116,236                   12/05/95
5,471,964                   08/176,641                   12/05/95
5,471,972                   08/150,223                   12/05/95
5,471,973                   08/369,171                   12/05/95
5,471,976                   08/073,681                   12/05/95
5,471,978                   08/153,166                   12/05/95
5,471,982                   07/951,728                   12/05/95
5,471,983                   08/093,061                   12/05/95
5,471,993                   08/410,839                   12/05/95
5,471,998                   08/172,898                   12/05/95
5,472,000                   08/393,099                   12/05/95
5,472,008                   08/201,928                   12/05/95
5,472,011                   08/287,482                   12/05/95
5,472,014                   08/219,203                   12/05/95
5,472,015                   08/340,326                   12/05/95
5,472,021                   08/057,335                   12/05/95
5,472,025                   08/343,333                   12/05/95
5,472,026                   08/270,754                   12/05/95
5,472,040                   08/216,492                   12/05/95
5,472,046                   08/350,948                   12/05/95
5,472,052                   08/261,259                   12/05/95
5,472,054                   08/386,070                   12/05/95
5,472,060                   08/142,051                   12/05/95
5,472,062                   08/075,587                   12/05/95
5,472,071                   08/211,006                   12/05/95
5,472,074                   08/208,724                   12/05/95
5,472,079                   08/261,199                   12/05/95
5,472,082                   08/110,971                   12/05/95
5,472,083                   08/291,015                   12/05/95
5,472,084                   08/277,397                   12/05/95
5,472,085                   08/242,785                   12/05/95
5,472,088                   08/136,101                   12/05/95
5,472,094                   08/131,514                   12/05/95
5,472,095                   08/242,304                   12/05/95
5,472,097                   08/131,095                   12/05/95
5,472,098                   08/263,739                   12/05/95
5,472,100                   08/092,369                   12/05/95
5,472,102                   08/260,261                   12/05/95
5,472,118                   08/202,153                   12/05/95
5,472,123                   08/289,464                   12/05/95
5,472,124                   08/269,019                   12/05/95
5,472,125                   08/162,667                   12/05/95
5,472,138                   08/416,397                   12/05/95
5,472,140                   08/273,374                   12/05/95
5,472,141                   08/189,207                   12/05/95
5,472,149                   08/160,658                   12/05/95
5,472,150                   08/201,667                   12/05/95
5,472,159                   08/033,698                   12/05/95
5,472,163                   08/249,310                   12/05/95
5,472,164                   08/164,343                   12/05/95
5,472,166                   08/220,672                   12/05/95
5,472,167                   08/188,047                   12/05/95
5,472,168                   07/992,160                   12/05/95
5,472,170                   08/064,127                   12/05/95
5,472,173                   08/225,670                   12/05/95
5,472,175                   08/293,649                   12/05/95
5,472,176                   08/270,050                   12/05/95
5,472,180                   08/366,459                   12/05/95
5,472,186                   08/285,115                   12/05/95
5,472,189                   08/129,978                   12/05/95
5,472,193                   08/347,645                   12/05/95
5,472,198                   08/270,731                   12/05/95
5,472,201                   08/261,127                   12/05/95
5,472,204                   08/270,355                   12/05/95
5,472,205                   08/263,615                   12/05/95
5,472,206                   08/382,160                   12/05/95
5,472,208                   08/327,547                   12/05/95
5,472,209                   08/169,510                   12/05/95
5,472,210                   08/261,189                   12/05/95
5,472,212                   08/177,179                   12/05/95
5,472,213                   08/311,260                   12/05/95
5,472,215                   08/215,744                   12/05/95
5,472,230                   08/349,036                   12/05/95
5,472,231                   08/232,619                   12/05/95
5,472,234                   08/248,685                   12/05/95
5,472,236                   08/193,104                   12/05/95
5,472,237                   08/239,504                   12/05/95
5,472,239                   08/241,778                   12/05/95
5,472,250                   08/216,352                   12/05/95
5,472,255                   08/297,507                   12/05/95
5,472,258                   08/187,701                   12/05/95
5,472,274                   08/304,287                   12/05/95
5,472,276                   08/313,265                   12/05/95
5,472,278                   08/321,233                   12/05/95
5,472,280                   08/210,256                   12/05/95
5,472,282                   08/235,925                   12/05/95
5,472,285                   08/331,652                   12/05/95
5,472,300                   08/011,303                   12/05/95
5,472,301                   08/354,236                   12/05/95
5,472,304                   08/272,609                   12/05/95
5,472,311                   08/324,364                   12/05/95
5,472,318                   08/264,941                   12/05/95
5,472,319                   08/301,567                   12/05/95
5,472,320                   08/408,895                   12/05/95
5,472,328                   08/284,991                   12/05/95
5,472,332                   08/134,285                   12/05/95
5,472,340                   08/224,686                   12/05/95
5,472,353                   08/421,257                   12/05/95
5,472,368                   08/149,455                   12/05/95
5,472,372                   08/241,775                   12/05/95
5,472,373                   08/291,583                   12/05/95
5,472,375                   08/164,970                   12/05/95
5,472,377                   08/374,071                   12/05/95
5,472,381                   08/251,483                   12/05/95
5,472,387                   08/253,903                   12/05/95
5,472,389                   08/253,008                   12/05/95
5,472,390                   08/266,148                   12/05/95
5,472,391                   08/175,117                   12/05/95
5,472,395                   08/265,789                   12/05/95
5,472,396                   08/091,198                   12/05/95
5,472,397                   08/278,099                   12/05/95
5,472,400                   08/395,084                   12/05/95
5,472,404                   08/391,367                   12/05/95
5,472,405                   08/190,905                   12/05/95
5,472,427                   08/142,192                   12/05/95
5,472,429                   08/392,655                   12/05/95
5,472,433                   08/143,337                   12/05/95
5,472,447                   08/237,198                   12/05/95
5,472,448                   08/213,726                   12/05/95
5,472,455                   08/103,948                   12/05/95
5,472,476                   08/197,491                   12/05/95
5,472,484                   08/323,824                   12/05/95
5,472,519                   08/454,484                   12/05/95
5,472,522                   08/302,800                   12/05/95
5,472,542                   08/180,746                   12/05/95
5,472,546                   08/244,641                   12/05/95
5,472,555                   08/342,466                   12/05/95
5,472,557                   08/334,581                   12/05/95
5,472,558                   08/059,960                   12/05/95
5,472,560                   08/382,189                   12/05/95
5,472,561                   08/411,116                   12/05/95
5,472,570                   08/217,591                   12/05/95
5,472,577                   08/268,846                   12/05/95
5,472,581                   08/339,219                   12/05/95
5,472,583                   08/406,257                   12/05/95
5,472,586                   08/288,579                   12/05/95
5,472,588                   08/289,655                   12/05/95
5,472,589                   08/119,034                   12/05/95
5,472,602                   08/334,850                   12/05/95
5,472,604                   08/354,000                   12/05/95
5,472,612                   08/106,681                   12/05/95
5,472,624                   08/318,934                   12/05/95
5,472,631                   08/366,397                   12/05/95
5,472,633                   07/957,320                   12/05/95
5,472,634                   08/312,700                   12/05/95
5,472,637                   07/583,894                   12/05/95
5,472,638                   08/234,449                   12/05/95
5,472,641                   08/255,619                   12/05/95
5,472,642                   08/362,358                   12/05/95
5,472,652                   08/169,054                   12/05/95
5,472,653                   08/169,597                   12/05/95
5,472,666                   08/281,755                   12/05/95
5,472,670                   08/027,282                   12/05/95
5,472,674                   08/182,110                   12/05/95
5,472,676                   07/933,568                   12/05/95
5,472,690                   08/102,200                   12/05/95
5,472,695                   08/225,951                   12/05/95
5,472,700                   08/317,262                   12/05/95
5,472,718                   08/190,097                   12/05/95
5,472,724                   08/220,330                   12/05/95
5,472,742                   08/313,967                   12/05/95
5,472,745                   08/232,031                   12/05/95
5,472,751                   08/117,415                   12/05/95
5,472,761                   08/169,855                   12/05/95
5,472,764                   08/071,407                   12/05/95
5,472,765                   08/273,193                   12/05/95
5,472,767                   08/200,882                   12/05/95
5,472,769                   08/165,277                   12/05/95
5,472,770                   07/821,350                   12/05/95
5,472,787                   07/931,463                   12/05/95
5,472,791                   08/142,697                   12/05/95
5,472,811                   08/236,870                   12/05/95
5,472,815                   08/187,243                   12/05/95
5,472,830                   08/228,775                   12/05/95
5,472,832                   08/069,675                   12/05/95
5,472,836                   08/212,492                   12/05/95
5,472,838                   08/272,669                   12/05/95
5,472,843                   08/221,968                   12/05/95
5,472,856                   08/171,382                   12/05/95
5,472,859                   08/100,868                   12/05/95
5,472,929                   08/281,687                   12/05/95
5,472,930                   08/194,608                   12/05/95
5,472,936                   08/270,629                   12/05/95
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