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 June 16, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,672,701                   06/909,600                   06/16/87
4,672,709                   06/810,736                   06/16/87
4,672,715                   06/755,150                   06/16/87
4,672,717                   06/883,347                   06/16/87
4,672,718                   06/714,715                   06/16/87
4,672,719                   06/841,665                   06/16/87
4,672,729                   06/659,910                   06/16/87
4,672,732                   06/833,927                   06/16/87
4,672,741                   06/749,603                   06/16/87
4,672,744                   06/702,400                   06/16/87
4,672,754                   06/902,049                   06/16/87
4,672,757                   06/599,196                   06/16/87
4,672,763                   06/898,633                   06/16/87
4,672,771                   06/864,510                   06/16/87
4,672,775                   06/702,363                   06/16/87
4,672,787                   06/791,254                   06/16/87
4,672,792                   06/817,735                   06/16/87
4,672,795                   06/806,153                   06/16/87
4,672,797                   06/747,255                   06/16/87
4,672,800                   06/868,576                   06/16/87
4,672,810                   06/787,251                   06/16/87
4,672,811                   06/601,228                   06/16/87
4,672,816                   06/768,231                   06/16/87
4,672,817                   06/698,838                   06/16/87
4,672,819                   06/900,625                   06/16/87
4,672,820                   06/840,191                   06/16/87
4,672,821                   06/800,540                   06/16/87
4,672,822                   06/809,798                   06/16/87
4,672,826                   06/829,609                   06/16/87
4,672,835                   06/657,724                   06/16/87
4,672,845                   06/735,546                   06/16/87
4,672,851                   06/868,483                   06/16/87
4,672,853                   06/666,372                   06/16/87
4,672,855                   06/860,121                   06/16/87
4,672,856                   06/876,627                   06/16/87
4,672,863                   06/852,811                   06/16/87
4,672,874                   06/870,923                   06/16/87
4,672,877                   06/830,068                   06/16/87
4,672,883                   06/803,359                   06/16/87
4,672,884                   06/790,584                   06/16/87
4,672,891                   06/844,378                   06/16/87
4,672,893                   06/714,419                   06/16/87
4,672,905                   06/873,267                   06/16/87
4,672,907                   06/838,439                   06/16/87
4,672,929                   06/809,013                   06/16/87
4,672,930                   06/855,192                   06/16/87
4,672,935                   06/789,877                   06/16/87
4,672,948                   06/784,713                   06/16/87
4,672,950                   06/367,885                   06/16/87
4,672,954                   06/783,473                   06/16/87
4,672,955                   06/869,522                   06/16/87
4,672,963                   06/742,278                   06/16/87
4,672,974                   06/744,758                   06/16/87
4,672,982                   06/770,380                   06/16/87
4,673,015                   06/630,089                   06/16/87
4,673,016                   06/776,743                   06/16/87
4,673,018                   06/670,813                   06/16/87
4,673,026                   06/657,010                   06/16/87
4,673,027                   06/385,922                   06/16/87
4,673,039                   06/822,207                   06/16/87
4,673,045                   06/892,266                   06/16/87
4,673,052                   06/536,250                   06/16/87
4,673,057                   06/671,099                   06/16/87
4,673,064                   06/855,909                   06/16/87
4,673,065                   06/860,947                   06/16/87
4,673,066                   06/831,276                   06/16/87
4,673,071                   06/675,876                   06/16/87
4,673,073                   06/762,690                   06/16/87
4,673,077                   06/825,267                   06/16/87
4,673,082                   06/870,869                   06/16/87
4,673,089                   06/788,943                   06/16/87
4,673,095                   06/796,338                   06/16/87
4,673,096                   06/812,777                   06/16/87
4,673,109                   06/788,964                   06/16/87
4,673,112                   06/726,328                   06/16/87
4,673,115                   06/856,488                   06/16/87
4,673,119                   06/708,360                   06/16/87
4,673,123                   06/731,614                   06/16/87
4,673,138                   06/834,191                   06/16/87
4,673,147                   06/703,974                   06/16/87
4,673,155                   06/853,632                   06/16/87
4,673,160                   06/841,541                   06/16/87
4,673,171                   06/681,940                   06/16/87
4,673,173                   06/824,471                   06/16/87
4,673,178                   06/822,203                   06/16/87
4,673,180                   06/769,955                   06/16/87
4,673,184                   06/686,186                   06/16/87
4,673,187                   06/753,273                   06/16/87
4,673,189                   06/875,968                   06/16/87
4,673,200                   06/809,739                   06/16/87
4,673,203                   06/787,627                   06/16/87
4,673,219                   06/801,867                   06/16/87
4,673,220                   06/777,625                   06/16/87
4,673,221                   06/741,904                   06/16/87
4,673,223                   06/800,173                   06/16/87
4,673,232                   06/814,955                   06/16/87
4,673,237                   06/791,818                   06/16/87
4,673,240                   06/345,619                   06/16/87
4,673,241                   06/786,028                   06/16/87
4,673,248                   06/902,028                   06/16/87
4,673,263                   06/435,767                   06/16/87
4,673,268                   06/861,925                   06/16/87
4,673,270                   06/750,808                   06/16/87
4,673,273                   06/828,732                   06/16/87
4,673,284                   06/258,033                   06/16/87
4,673,285                   06/867,359                   06/16/87
4,673,287                   06/617,806                   06/16/87
4,673,288                   06/648,356                   06/16/87
4,673,291                   06/747,533                   06/16/87
4,673,294                   06/723,567                   06/16/87
4,673,296                   06/756,378                   06/16/87
4,673,305                   06/811,062                   06/16/87
4,673,307                   06/753,390                   06/16/87
4,673,309                   06/685,705                   06/16/87
4,673,312                   06/738,029                   06/16/87
4,673,316                   06/806,109                   06/16/87
4,673,317                   06/827,648                   06/16/87
4,673,323                   06/848,939                   06/16/87
4,673,326                   06/738,761                   06/16/87
4,673,327                   06/786,323                   06/16/87
4,673,331                   06/825,205                   06/16/87
4,673,335                   06/730,087                   06/16/87
4,673,339                   06/896,347                   06/16/87
4,673,348                   06/847,400                   06/16/87
4,673,350                   06/900,529                   06/16/87
4,673,351                   06/795,998                   06/16/87
4,673,357                   06/663,064                   06/16/87
4,673,361                   06/820,425                   06/16/87
4,673,365                   06/729,127                   06/16/87
4,673,385                   06/946,104                   06/16/87
4,673,387                   06/858,065                   06/16/87
4,673,389                   06/676,020                   06/16/87
4,673,390                   06/676,009                   06/16/87
4,673,391                   06/615,235                   06/16/87
4,673,393                   06/813,025                   06/16/87
4,673,400                   06/827,459                   06/16/87
4,673,406                   06/792,114                   06/16/87
4,673,407                   06/704,622                   06/16/87
4,673,421                   06/848,301                   06/16/87
4,673,434                   06/892,813                   06/16/87
4,673,451                   06/756,319                   06/16/87
4,673,456                   06/777,032                   06/16/87
4,673,457                   06/765,153                   06/16/87
4,673,459                   06/746,092                   06/16/87
4,673,460                   06/654,865                   06/16/87
4,673,465                   06/854,424                   06/16/87
4,673,466                   06/822,602                   06/16/87
4,673,467                   06/902,845                   06/16/87
4,673,473                   06/741,780                   06/16/87
4,673,480                   06/575,111                   06/16/87
4,673,487                   06/826,941                   06/16/87
4,673,490                   06/768,615                   06/16/87
4,673,494                   06/771,105                   06/16/87
4,673,499                   06/361,456                   06/16/87
4,673,515                   06/776,902                   06/16/87
4,673,520                   06/816,686                   06/16/87
4,673,529                   06/803,215                   06/16/87
4,673,530                   06/613,093                   06/16/87
4,673,534                   06/878,698                   06/16/87
4,673,537                   06/870,405                   06/16/87
4,673,543                   06/827,223                   06/16/87
4,673,545                   06/668,635                   06/16/87
4,673,550                   06/910,859                   06/16/87
4,673,553                   06/905,071                   06/16/87
4,673,560                   06/771,054                   06/16/87
4,673,564                   06/790,639                   06/16/87
4,673,566                   06/613,780                   06/16/87
4,673,576                   06/731,409                   06/16/87
4,673,583                   06/831,529                   06/16/87
4,673,588                   06/694,725                   06/16/87
4,673,596                   06/775,953                   06/16/87
4,673,597                   06/858,898                   06/16/87
4,673,598                   06/863,173                   06/16/87
4,673,611                   06/743,773                   06/16/87
4,673,621                   06/842,542                   06/16/87
4,673,622                   06/577,317                   06/16/87
4,673,629                   06/813,619                   06/16/87
4,673,633                   06/625,600                   06/16/87
4,673,636                   06/720,717                   06/16/87
4,673,639                   06/773,586                   06/16/87
4,673,650                   06/845,503                   06/16/87
4,673,655                   06/739,271                   06/16/87
4,673,657                   06/616,395                   06/16/87
4,673,658                   06/855,687                   06/16/87
4,673,665                   06/456,253                   06/16/87
4,673,669                   06/786,851                   06/16/87
4,673,672                   06/875,166                   06/16/87
4,673,677                   06/764,351                   06/16/87
4,673,683                   06/772,714                   06/16/87
4,673,685                   06/888,671                   06/16/87
4,673,688                   06/914,512                   06/16/87
4,673,689                   06/845,141                   06/16/87
4,673,691                   06/668,501                   06/16/87
4,673,692                   06/789,275                   06/16/87
4,673,695                   06/785,436                   06/16/87
4,673,699                   06/672,511                   06/16/87
4,673,701                   06/687,090                   06/16/87
4,673,702                   06/747,133                   06/16/87
4,673,705                   06/720,251                   06/16/87
4,673,709                   06/724,176                   06/16/87
4,673,716                   06/801,331                   06/16/87
4,673,720                   06/520,197                   06/16/87
4,673,724                   06/804,419                   06/16/87
4,673,726                   06/818,301                   06/16/87
4,673,732                   06/769,333                   06/16/87
4,673,737                   06/761,647                   06/16/87
4,673,742                   06/703,523                   06/16/87
4,673,747                   06/804,148                   06/16/87
4,673,754                   06/842,140                   06/16/87
4,673,758                   06/793,227                   06/16/87
4,673,770                   06/789,446                   06/16/87
4,673,777                   06/872,072                   06/16/87
4,673,779                   06/821,849                   06/16/87
4,673,780                   06/827,998                   06/16/87
4,673,783                   06/877,402                   06/16/87
4,673,786                   06/688,633                   06/16/87
4,673,788                   06/671,422                   06/16/87
4,673,791                   06/768,436                   06/16/87
4,673,795                   06/660,837                   06/16/87
4,673,796                   06/806,532                   06/16/87
4,673,797                   06/792,131                   06/16/87
4,673,803                   06/673,781                   06/16/87
4,673,812                   06/740,056                   06/16/87
4,673,817                   06/736,561                   06/16/87
4,673,821                   06/654,766                   06/16/87
4,673,831                   06/567,386                   06/16/87
4,673,837                   06/807,775                   06/16/87
4,673,840                   06/623,522                   06/16/87
4,673,846                   06/705,529                   06/16/87
4,673,847                   06/722,960                   06/16/87
4,673,849                   06/917,586                   06/16/87
4,673,850                   06/885,309                   06/16/87
4,673,865                   06/848,056                   06/16/87
4,673,867                   06/879,879                   06/16/87
4,673,869                   06/701,338                   06/16/87
4,673,878                   06/824,309                   06/16/87
4,673,879                   06/625,029                   06/16/87
4,673,880                   06/766,617                   06/16/87
4,673,882                   06/586,808                   06/16/87
4,673,885                   06/630,117                   06/16/87
4,673,886                   06/833,291                   06/16/87
4,673,897                   06/787,002                   06/16/87
4,673,903                   06/667,824                   06/16/87
4,673,923                   06/864,252                   06/16/87
4,673,926                   06/701,281                   06/16/87
4,673,941                   06/672,517                   06/16/87
4,673,949                   06/653,697                   06/16/87
4,673,953                   06/808,709                   06/16/87
4,673,954                   06/676,401                   06/16/87
4,673,958                   06/697,301                   06/16/87
4,673,962                   06/714,589                   06/16/87
4,673,963                   06/770,323                   06/16/87
4,673,964                   06/810,929                   06/16/87
4,673,971                   06/804,931                   06/16/87
4,673,974                   06/816,841                   06/16/87
4,673,977                   06/747,094                   06/16/87
4,673,978                   06/866,484                   06/16/87
4,673,992                   06/836,991                   06/16/87
4,673,999                   06/643,544                   06/16/87
4,674,000                   06/628,041                   06/16/87
4,674,010                   06/862,926                   06/16/87
4,674,012                   06/826,124                   06/16/87
4,674,026                   06/636,022                   06/16/87
4,674,032                   06/596,203                   06/16/87
4,674,036                   06/674,212                   06/16/87
4,674,038                   06/687,073                   06/16/87
4,674,043                   06/719,210                   06/16/87
4,674,046                   06/692,559                   06/16/87
4,674,053                   06/906,690                   06/16/87
4,674,060                   06/634,133                   06/16/87
4,674,072                   06/776,676                   06/16/87
4,674,073                   06/835,005                   06/16/87
4,674,077                   06/641,171                   06/16/87
4,674,083                   06/672,061                   06/16/87
4,674,084                   06/758,796                   06/16/87
4,674,087                   06/760,714                   06/16/87
4,674,100                   06/658,008                   06/16/87
4,674,101                   06/782,525                   06/16/87
4,674,108                   06/751,131                   06/16/87
4,674,109                   06/780,176                   06/16/87
4,674,117                   06/770,465                   06/16/87
4,674,119                   06/598,650                   06/16/87
4,674,120                   06/796,955                   06/16/87

                    PATENTS WHICH EXPIRED ON June 11, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,022,093                   07/381,596                   06/11/91
5,022,096                   07/467,069                   06/11/91
5,022,098                   07/430,273                   06/11/91
5,022,099                   07/474,450                   06/11/91
5,022,103                   07/357,207                   06/11/91
5,022,113                   07/494,294                   06/11/91
5,022,114                   07/320,013                   06/11/91
5,022,118                   07/542,771                   06/11/91
5,022,119                   07/416,862                   06/11/91
5,022,126                   07/509,940                   06/11/91
5,022,127                   07/448,245                   06/11/91
5,022,129                   07/412,045                   06/11/91
5,022,130                   07/456,554                   06/11/91
5,022,132                   07/456,174                   06/11/91
5,022,133                   07/575,599                   06/11/91
5,022,136                   07/390,951                   06/11/91
5,022,139                   07/549,630                   06/11/91
5,022,140                   07/490,407                   06/11/91
5,022,142                   06/839,485                   06/11/91
5,022,145                   07/387,275                   06/11/91
5,022,155                   07/445,963                   06/11/91
5,022,158                   07/516,545                   06/11/91
5,022,160                   07/476,400                   06/11/91
5,022,166                   07/534,798                   06/11/91
5,022,173                   07/498,851                   06/11/91
5,022,174                   07/435,981                   06/11/91
5,022,176                   07/461,982                   06/11/91
5,022,181                   07/450,593                   06/11/91
5,022,182                   07/235,116                   06/11/91
5,022,187                   07/568,765                   06/11/91
5,022,192                   07/504,152                   06/11/91
5,022,193                   07/489,268                   06/11/91
5,022,202                   07/520,844                   06/11/91
5,022,206                   07/468,859                   06/11/91
5,022,221                   07/501,771                   06/11/91
5,022,226                   07/499,165                   06/11/91
5,022,229                   07/484,216                   06/11/91
5,022,232                   07/330,502                   06/11/91
5,022,234                   07/533,303                   06/11/91
5,022,235                   07/361,996                   06/11/91
5,022,236                   07/482,239                   06/11/91
5,022,245                   07/484,265                   06/11/91
5,022,246                   07/536,742                   06/11/91
5,022,248                   07/596,440                   06/11/91
5,022,254                   07/387,840                   06/11/91
5,022,257                   07/497,903                   06/11/91
5,022,259                   07/511,758                   06/11/91
5,022,263                   07/362,400                   06/11/91
5,022,264                   07/434,437                   06/11/91
5,022,267                   07/465,288                   06/11/91
5,022,271                   07/448,849                   06/11/91
5,022,274                   07/468,367                   06/11/91
5,022,277                   07/397,107                   06/11/91
5,022,281                   07/408,112                   06/11/91
5,022,286                   07/336,431                   06/11/91
5,022,288                   07/595,273                   06/11/91
5,022,292                   07/503,577                   06/11/91
5,022,294                   07/338,841                   06/11/91
5,022,295                   07/442,477                   06/11/91
5,022,298                   07/250,017                   06/11/91
5,022,302                   07/481,226                   06/11/91
5,022,307                   07/449,207                   06/11/91
5,022,311                   07/496,252                   06/11/91
5,022,315                   07/380,179                   06/11/91
5,022,323                   07/453,769                   06/11/91
5,022,334                   07/380,402                   06/11/91
5,022,335                   07/427,292                   06/11/91
5,022,338                   07/137,930                   06/11/91
5,022,340                   07/436,693                   06/11/91
5,022,344                   07/322,343                   06/11/91
5,022,345                   07/480,871                   06/11/91
5,022,347                   07/462,133                   06/11/91
5,022,353                   07/514,884                   06/11/91
5,022,361                   07/607,943                   06/11/91
5,022,366                   07/408,572                   06/11/91
5,022,367                   07/562,485                   06/11/91
5,022,369                   07/470,687                   06/11/91
5,022,370                   07/351,772                   06/11/91
5,022,379                   07/523,064                   06/11/91
5,022,391                   07/361,320                   06/11/91
5,022,400                   07/153,322                   06/11/91
5,022,402                   07/445,181                   06/11/91
5,022,408                   07/512,840                   06/11/91
5,022,410                   07/253,007                   06/11/91
5,022,418                   07/413,747                   06/11/91
5,022,420                   07/554,566                   06/11/91
5,022,422                   07/559,641                   06/11/91
5,022,425                   07/500,524                   06/11/91
5,022,433                   07/364,241                   06/11/91
5,022,438                   07/570,197                   06/11/91
5,022,439                   07/359,789                   06/11/91
5,022,442                   07/325,769                   06/11/91
5,022,445                   07/572,077                   06/11/91
5,022,446                   07/457,902                   06/11/91
5,022,447                   07/481,991                   06/11/91
5,022,448                   07/352,894                   06/11/91
5,022,451                   07/402,906                   06/11/91
5,022,453                   07/480,624                   06/11/91
5,022,461                   07/408,101                   06/11/91
5,022,462                   07/492,601                   06/11/91
5,022,464                   07/377,251                   06/11/91
5,022,466                   07/517,890                   06/11/91
5,022,471                   07/461,741                   06/11/91
5,022,474                   07/492,476                   06/11/91
5,022,476                   07/424,597                   06/11/91
5,022,483                   07/543,551                   06/11/91
5,022,495                   07/481,215                   06/11/91
5,022,497                   07/318,295                   06/11/91
5,022,509                   07/489,940                   06/11/91
5,022,513                   07/507,274                   06/11/91
5,022,517                   07/594,295                   06/11/91
5,022,533                   07/433,252                   06/11/91
5,022,538                   07/441,960                   06/11/91
5,022,539                   07/460,677                   06/11/91
5,022,542                   07/281,723                   06/11/91
5,022,550                   07/519,772                   06/11/91
5,022,553                   07/529,506                   06/11/91
5,022,555                   07/559,311                   06/11/91
5,022,559                   07/482,269                   06/11/91
5,022,562                   07/378,802                   06/11/91
5,022,566                   07/485,294                   06/11/91
5,022,573                   07/379,416                   06/11/91
5,022,576                   07/297,083                   06/11/91
5,022,577                   07/487,850                   06/11/91
5,022,584                   07/289,952                   06/11/91
5,022,585                   07/297,373                   06/11/91
5,022,588                   07/456,567                   06/11/91
5,022,598                   07/463,024                   06/11/91
5,022,600                   07/569,519                   06/11/91
5,022,604                   07/285,297                   06/11/91
5,022,605                   07/477,018                   06/11/91
5,022,606                   07/416,231                   06/11/91
5,022,612                   07/322,024                   06/11/91
5,022,616                   07/382,475                   06/11/91
5,022,620                   07/381,055                   06/11/91
5,022,623                   07/617,664                   06/11/91
5,022,629                   07/372,267                   06/11/91
5,022,631                   07/599,707                   06/11/91
5,022,633                   07/436,892                   06/11/91
5,022,647                   07/561,276                   06/11/91
5,022,649                   07/395,844                   06/11/91
5,022,650                   07/512,471                   06/11/91
5,022,651                   07/356,829                   06/11/91
5,022,652                   07/590,440                   06/11/91
5,022,657                   07/579,692                   06/11/91
5,022,658                   07/452,305                   06/11/91
5,022,668                   07/512,922                   06/11/91
5,022,692                   07/451,701                   06/11/91
5,022,696                   07/382,643                   06/11/91
5,022,704                   07/348,643                   06/11/91
5,022,706                   07/523,617                   06/11/91
5,022,707                   07/261,300                   06/11/91
5,022,714                   07/454,602                   06/11/91
5,022,715                   07/463,055                   06/11/91
5,022,720                   07/516,443                   06/11/91
5,022,722                   07/390,072                   06/11/91
5,022,723                   07/379,115                   06/11/91
5,022,733                   07/397,057                   06/11/91
5,022,738                   07/588,615                   06/11/91
5,022,740                   07/460,823                   06/11/91
5,022,747                   07/431,917                   06/11/91
5,022,757                   07/299,315                   06/11/91
5,022,761                   07/431,993                   06/11/91
5,022,764                   07/377,543                   06/11/91
5,022,769                   07/535,238                   06/11/91
5,022,770                   07/543,626                   06/11/91
5,022,784                   07/583,742                   06/11/91
5,022,785                   07/424,158                   06/11/91
5,022,790                   07/445,274                   06/11/91
5,022,791                   07/475,495                   06/11/91
5,022,792                   07/460,044                   06/11/91
5,022,810                   07/402,381                   06/11/91
5,022,811                   07/457,706                   06/11/91
5,022,824                   07/255,099                   06/11/91
5,022,825                   07/255,100                   06/11/91
5,022,832                   07/278,225                   06/11/91
5,022,839                   07/426,279                   06/11/91
5,022,844                   07/467,185                   06/11/91
5,022,847                   07/374,925                   06/11/91
5,022,848                   07/539,992                   06/11/91
5,022,851                   07/210,630                   06/11/91
5,022,856                   07/426,006                   06/11/91
5,022,859                   07/419,142                   06/11/91
5,022,861                   07/534,445                   06/11/91
5,022,864                   07/410,135                   06/11/91
5,022,865                   07/370,943                   06/11/91
5,022,867                   07/365,280                   06/11/91
5,022,869                   07/431,794                   06/11/91
5,022,873                   07/475,844                   06/11/91
5,022,874                   07/589,726                   06/11/91
5,022,876                   07/425,489                   06/11/91
5,022,877                   07/481,073                   06/11/91
5,022,878                   07/240,752                   06/11/91
5,022,882                   07/617,439                   06/11/91
5,022,885                   07/419,095                   06/11/91
5,022,900                   07/379,382                   06/11/91
5,022,909                   07/254,272                   06/11/91
5,022,913                   07/399,032                   06/11/91
5,022,926                   07/353,231                   06/11/91
5,022,929                   07/483,190                   06/11/91
5,022,930                   07/369,181                   06/11/91
5,022,948                   07/365,814                   06/11/91
5,022,954                   07/416,857                   06/11/91
5,022,959                   07/392,582                   06/11/91
5,022,962                   07/425,902                   06/11/91
5,022,969                   07/353,072                   06/11/91
5,022,976                   07/330,140                   06/11/91
5,022,982                   07/296,604                   06/11/91
5,022,983                   07/395,014                   06/11/91
5,022,985                   07/407,558                   06/11/91
5,022,987                   07/532,814                   06/11/91
5,022,988                   07/260,382                   06/11/91
5,022,995                   07/524,241                   06/11/91
5,023,003                   07/437,882                   06/11/91
5,023,005                   07/486,688                   06/11/91
5,023,006                   07/621,102                   06/11/91
5,023,019                   07/567,635                   06/11/91
5,023,024                   07/296,777                   06/11/91
5,023,027                   06/697,452                   06/11/91
5,023,034                   07/543,926                   06/11/91
5,023,056                   07/457,431                   06/11/91
5,023,057                   07/321,082                   06/11/91
5,023,060                   07/390,699                   06/11/91
5,023,067                   07/237,268                   06/11/91
5,023,071                   07/517,459                   06/11/91
5,023,072                   07/230,756                   06/11/91
5,023,081                   07/328,156                   06/11/91
5,023,085                   07/443,699                   06/11/91
5,023,095                   07/535,074                   06/11/91
5,023,097                   07/352,771                   06/11/91
5,023,107                   07/346,806                   06/11/91
5,023,116                   07/391,104                   06/11/91
5,023,119                   07/267,717                   06/11/91
5,023,123                   07/400,061                   06/11/91
5,023,134                   07/403,866                   06/11/91
5,023,141                   07/384,811                   06/11/91
5,023,150                   07/392,290                   06/11/91
5,023,152                   07/483,942                   06/11/91
5,023,153                   07/333,777                   06/11/91
5,023,160                   07/433,309                   06/11/91
5,023,167                   07/490,217                   06/11/91
5,023,174                   07/365,226                   06/11/91
5,023,176                   06/936,802                   06/11/91
5,023,178                   07/285,624                   06/11/91
5,023,184                   07/085,438                   06/11/91
5,023,186                   07/559,547                   06/11/91
5,023,191                   07/444,567                   06/11/91
5,023,192                   07/582,298                   06/11/91
5,023,196                   07/471,899                   06/11/91
5,023,197                   07/567,861                   06/11/91
5,023,200                   07/274,892                   06/11/91
5,023,201                   07/575,460                   06/11/91
5,023,211                   07/570,346                   06/11/91
5,023,212                   07/432,769                   06/11/91
5,023,213                   06/939,920                   06/11/91
5,023,215                   07/624,500                   06/11/91
5,023,233                   07/386,395                   06/11/91
5,023,237                   07/401,312                   06/11/91
5,023,238                   07/253,167                   06/11/91
5,023,239                   07/150,647                   06/11/91
5,023,241                   07/387,207                   06/11/91
5,023,266                   07/469,783                   06/11/91
5,023,271                   06/765,359                   06/11/91
5,023,274                   07/342,925                   06/11/91
5,023,275                   07/533,568                   06/11/91
5,023,278                   07/438,789                   06/11/91
5,023,284                   07/390,955                   06/11/91
5,023,285                   07/223,318                   06/11/91
5,023,289                   07/528,410                   06/11/91
5,023,298                   07/457,939                   06/11/91
5,023,303                   07/150,167                   06/11/91
5,023,304                   07/489,710                   06/11/91
5,023,307                   07/223,012                   06/11/91
5,023,311                   07/277,509                   06/11/91
5,023,316                   07/538,296                   06/11/91
5,023,317                   07/496,654                   06/11/91
5,023,320                   07/219,093                   06/11/91
5,023,334                   07/402,385                   06/11/91
5,023,346                   07/434,443                   06/11/91
5,023,353                   07/482,845                   06/11/91
5,023,355                   07/541,039                   06/11/91
5,023,356                   07/337,997                   06/11/91
5,023,357                   07/411,045                   06/11/91
5,023,359                   07/538,030                   06/11/91
5,023,362                   07/067,406                   06/11/91
5,023,368                   07/363,244                   06/11/91
5,023,376                   07/380,432                   06/11/91
5,023,386                   07/457,681                   06/11/91
5,023,390                   07/405,966                   06/11/91
5,023,395                   07/452,304                   06/11/91
5,023,403                   07/451,346                   06/11/91
5,023,409                   07/388,392                   06/11/91
5,023,412                   07/494,304                   06/11/91
5,023,426                   07/369,394                   06/11/91
5,023,428                   07/346,999                   06/11/91
5,023,430                   07/405,142                   06/11/91
5,023,431                   07/392,404                   06/11/91
5,023,432                   07/473,418                   06/11/91
5,023,433                   07/357,332                   06/11/91
5,023,441                   07/392,531                   06/11/91
5,023,444                   07/458,318                   06/11/91
5,023,447                   07/539,348                   06/11/91
5,023,450                   07/508,157                   06/11/91
5,023,463                   07/493,952                   06/11/91
5,023,471                   07/457,677                   06/11/91
5,023,472                   07/242,762                   06/11/91
5,023,478                   07/493,079                   06/11/91
5,023,479                   07/560,920                   06/11/91
5,023,482                   06/733,416                   06/11/91
5,023,489                   07/520,696                   06/11/91
5,023,497                   07/129,522                   06/11/91
5,023,503                   07/460,454                   06/11/91
5,023,504                   07/514,981                   06/11/91
5,023,506                   07/458,111                   06/11/91
5,023,510                   07/354,006                   06/11/91
5,023,512                   07/414,891                   06/11/91
5,023,513                   07/364,650                   06/11/91
5,023,514                   07/339,731                   06/11/91
5,023,528                   07/263,502                   06/11/91
5,023,533                   07/477,774                   06/11/91
5,023,535                   07/341,212                   06/11/91
5,023,538                   07/380,039                   06/11/91
5,023,539                   07/364,910                   06/11/91
5,023,542                   07/518,621                   06/11/91
5,023,545                   07/532,416                   06/11/91
5,023,549                   07/319,962                   06/11/91
5,023,558                   07/351,980                   06/11/91
5,023,577                   07/524,395                   06/11/91
5,023,591                   07/437,279                   06/11/91
5,023,593                   07/632,625                   06/11/91
5,023,597                   07/486,537                   06/11/91
5,023,605                   07/467,112                   06/11/91
5,023,609                   07/352,228                   06/11/91
5,023,628                   07/495,974                   06/11/91
5,023,634                   07/461,641                   06/11/91
5,023,642                   07/560,905                   06/11/91
5,023,644                   07/435,071                   06/11/91
5,023,652                   07/378,398                   06/11/91
5,023,654                   07/429,491                   06/11/91
5,023,657                   07/532,168                   06/11/91
5,023,661                   07/335,305                   06/11/91
5,023,669                   07/430,342                   06/11/91
5,023,671                   07/328,830                   06/11/91
5,023,680                   07/269,836                   06/11/91
5,023,686                   07/538,786                   06/11/91
5,023,687                   07/304,210                   06/11/91
5,023,693                   07/532,573                   06/11/91
5,023,705                   07/296,194                   06/11/91
5,023,706                   07/486,552                   06/11/91
5,023,709                   07/431,847                   06/11/91
5,023,726                   07/442,283                   06/11/91
5,023,735                   07/445,151                   06/11/91
5,023,741                   07/263,893                   06/11/91
5,023,749                   07/567,999                   06/11/91
5,023,752                   07/429,943                   06/11/91
5,023,753                   07/461,422                   06/11/91
5,023,755                   07/506,280                   06/11/91
5,023,756                   07/366,095                   06/11/91
5,023,761                   07/610,391                   06/11/91
5,023,762                   07/572,222                   06/11/91
5,023,766                   07/490,521                   06/11/91
5,023,768                   07/450,183                   06/11/91
5,023,772                   07/264,420                   06/11/91
5,023,784                   07/334,315                   06/11/91
5,023,792                   07/330,257                   06/11/91
5,023,809                   07/541,089                   06/11/91
5,023,813                   07/389,028                   06/11/91
5,023,814                   07/392,651                   06/11/91
5,023,815                   07/389,855                   06/11/91
5,023,833                   07/130,207                   06/11/91
5,023,845                   07/264,734                   06/11/91
5,023,846                   07/490,492                   06/11/91
5,023,849                   07/435,886                   06/11/91
5,023,852                   07/595,572                   06/11/91
5,023,855                   07/170,352                   06/11/91
5,023,857                   07/243,400                   06/11/91
5,023,861                   07/287,801                   06/11/91
5,023,874                   07/314,619                   06/11/91
5,023,891                   07/385,534                   06/11/91
5,023,892                   07/505,597                   06/11/91
5,023,896                   07/356,419                   06/11/91
5,023,898                   07/470,979                   06/11/91
5,023,912                   07/331,287                   06/11/91
5,023,916                   07/399,688                   06/11/91
5,023,918                   07/416,564                   06/11/91
5,023,920                   07/400,211                   06/11/91
5,023,921                   07/353,435                   06/11/91
5,023,925                   07/416,476                   06/11/91
5,023,931                   07/457,843                   06/11/91
5,023,937                   07/349,479                   06/11/91
5,023,938                   07/310,568                   06/11/91
5,023,940                   07/401,699                   06/11/91
5,023,944                   07/402,508                   06/11/91
5,023,946                   07/386,072                   06/11/91

                    PATENTS WHICH EXPIRED ON June 13, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,423,088                   07/955,191                   06/13/95
5,423,089                   08/149,791                   06/13/95
5,423,094                   07/985,647                   06/13/95
5,423,095                   08/061,562                   06/13/95
5,423,096                   08/260,115                   06/13/95
5,423,098                   08/273,596                   06/13/95
5,423,099                   08/178,064                   06/13/95
5,423,120                   08/169,988                   06/13/95
5,423,122                   08/163,082                   06/13/95
5,423,124                   08/103,446                   06/13/95
5,423,128                   08/116,832                   06/13/95
5,423,132                   07/954,546                   06/13/95
5,423,134                   08/226,477                   06/13/95
5,423,136                   08/109,729                   06/13/95
5,423,138                   08/223,249                   06/13/95
5,423,141                   08/033,835                   06/13/95
5,423,142                   08/138,029                   06/13/95
5,423,145                   08/307,267                   06/13/95
5,423,148                   08/310,979                   06/13/95
5,423,156                   08/109,952                   06/13/95
5,423,163                   08/110,812                   06/13/95
5,423,164                   08/210,940                   06/13/95
5,423,167                   08/207,237                   06/13/95
5,423,169                   08/045,644                   06/13/95
5,423,171                   08/253,060                   06/13/95
5,423,172                   08/103,630                   06/13/95
5,423,179                   08/162,170                   06/13/95
5,423,184                   08/142,488                   06/13/95
5,423,186                   08/183,323                   06/13/95
5,423,194                   08/137,906                   06/13/95
5,423,207                   08/174,948                   06/13/95
5,423,211                   08/254,747                   06/13/95
5,423,215                   08/223,733                   06/13/95
5,423,217                   08/095,511                   06/13/95
5,423,227                   07/968,546                   06/13/95
5,423,228                   07/992,584                   06/13/95
5,423,230                   08/223,828                   06/13/95
5,423,238                   08/127,542                   06/13/95
5,423,253                   08/127,009                   06/13/95
5,423,258                   08/135,250                   06/13/95
5,423,260                   08/125,968                   06/13/95
5,423,266                   08/292,253                   06/13/95
5,423,270                   08/179,111                   06/13/95
5,423,271                   08/140,198                   06/13/95
5,423,276                   08/231,109                   06/13/95
5,423,279                   08/134,308                   06/13/95
5,423,280                   08/157,687                   06/13/95
5,423,282                   08/209,702                   06/13/95
5,423,291                   08/192,430                   06/13/95
5,423,292                   08/207,176                   06/13/95
5,423,305                   08/230,730                   06/13/95
5,423,308                   08/232,962                   06/13/95
5,423,326                   08/061,360                   06/13/95
5,423,334                   08/012,541                   06/13/95
5,423,335                   08/191,397                   06/13/95
5,423,343                   08/260,416                   06/13/95
5,423,344                   08/187,976                   06/13/95
5,423,346                   08/205,189                   06/13/95
5,423,352                   08/159,245                   06/13/95
5,423,353                   08/123,355                   06/13/95
5,423,354                   08/204,762                   06/13/95
5,423,362                   08/135,454                   06/13/95
5,423,371                   08/144,726                   06/13/95
5,423,374                   08/242,332                   06/13/95
5,423,380                   08/200,083                   06/13/95
5,423,387                   08/081,569                   06/13/95
5,423,393                   08/151,164                   06/13/95
5,423,404                   08/190,282                   06/13/95
5,423,409                   08/222,032                   06/13/95
5,423,410                   08/230,924                   06/13/95
5,423,412                   08/272,110                   06/13/95
5,423,414                   08/183,317                   06/13/95
5,423,422                   08/209,457                   06/13/95
5,423,424                   08/210,249                   06/13/95
5,423,427                   08/235,865                   06/13/95
5,423,428                   08/252,733                   06/13/95
5,423,429                   08/143,955                   06/13/95
5,423,430                   08/231,923                   06/13/95
5,423,431                   07/768,518                   06/13/95
5,423,435                   08/236,716                   06/13/95
5,423,440                   08/136,368                   06/13/95
5,423,445                   08/132,855                   06/13/95
5,423,452                   08/178,083                   06/13/95
5,423,465                   08/163,271                   06/13/95
5,423,466                   08/129,472                   06/13/95
5,423,472                   08/248,402                   06/13/95
5,423,476                   08/151,976                   06/13/95
5,423,481                   08/123,944                   06/13/95
5,423,491                   08/029,568                   06/13/95
5,423,494                   08/189,263                   06/13/95
5,423,503                   08/056,918                   06/13/95
5,423,505                   07/933,291                   06/13/95
5,423,506                   08/065,584                   06/13/95
5,423,511                   07/977,458                   06/13/95
5,423,512                   08/114,316                   06/13/95
5,423,530                   08/312,453                   06/13/95
5,423,535                   08/213,667                   06/13/95
5,423,536                   08/177,173                   06/13/95
5,423,537                   08/203,297                   06/13/95
5,423,544                   08/217,107                   06/13/95
5,423,545                   08/181,006                   06/13/95
5,423,546                   08/259,900                   06/13/95
5,423,547                   08/049,526                   06/13/95
5,423,550                   08/312,229                   06/13/95
5,423,553                   08/317,113                   06/13/95
5,423,560                   08/210,317                   06/13/95
5,423,562                   08/147,310                   06/13/95
5,423,563                   08/266,430                   06/13/95
5,423,564                   08/121,758                   06/13/95
5,423,565                   08/257,671                   06/13/95
5,423,566                   08/112,613                   06/13/95
5,423,567                   08/188,688                   06/13/95
5,423,571                   08/168,244                   06/13/95
5,423,576                   08/278,007                   06/13/95
5,423,583                   08/236,186                   06/13/95
5,423,587                   08/095,170                   06/13/95
5,423,597                   07/934,797                   06/13/95
5,423,601                   08/178,621                   06/13/95
5,423,604                   08/112,910                   06/13/95
5,423,611                   08/231,805                   06/13/95
5,423,623                   08/088,329                   06/13/95
5,423,627                   08/274,042                   06/13/95
5,423,636                   08/083,172                   06/13/95
5,423,641                   08/083,012                   06/13/95
5,423,652                   08/266,547                   06/13/95
5,423,655                   08/004,264                   06/13/95
5,423,663                   08/163,748                   06/13/95
5,423,666                   08/243,379                   06/13/95
5,423,669                   08/109,311                   06/13/95
5,423,676                   08/034,159                   06/13/95
5,423,679                   08/224,502                   06/13/95
5,423,685                   08/080,983                   06/13/95
5,423,703                   08/319,666                   06/13/95
5,423,705                   08/219,025                   06/13/95
5,423,720                   08/254,316                   06/13/95
5,423,722                   08/067,928                   06/13/95
5,423,730                   07/866,826                   06/13/95
5,423,731                   08/253,310                   06/13/95
5,423,738                   08/117,921                   06/13/95
5,423,744                   08/142,617                   06/13/95
5,423,748                   08/106,520                   06/13/95
5,423,755                   07/934,981                   06/13/95
5,423,757                   08/137,002                   06/13/95
5,423,764                   08/076,182                   06/13/95
5,423,773                   08/184,489                   06/13/95
5,423,775                   08/184,682                   06/13/95
5,423,780                   08/303,777                   06/13/95
5,423,784                   08/264,190                   06/13/95
5,423,785                   08/159,494                   06/13/95
5,423,791                   08/004,704                   06/13/95
5,423,792                   07/583,293                   06/13/95
5,423,813                   08/033,541                   06/13/95
5,423,818                   08/175,608                   06/13/95
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