Notice of Expiration of Patents
                     Due to Failure to Pay Maintenance Fee

   35 U.S.C. 41 and 37 CFR 1.362(g) provide that if the required
maintenance fee and any applicable surcharge are not paid in a patent
requiring such payment, the patent will expire at the end of the 4th, 8th
or 12th anniversary of the grant of the patent depending on the first
maintenance fee which was not paid.
   According to the records of the Office, the patents listed below have
expired due to failure to pay the required maintenance fee and any
applicable surcharge.

                     PATENTS WHICH EXPIRED ON June 6, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

4,835,794                       07/163,592                       06/06/89
4,835,801                       07/122,902                       06/06/89
4,835,813                       07/170,006                       06/06/89
4,835,818                       07/140,470                       06/06/89
4,835,821                       07/143,018                       06/06/89
4,835,830                       07/225,539                       06/06/89
4,835,832                       07/211,178                       06/06/89
4,835,844                       07/158,198                       06/06/89
4,835,847                       07/183,948                       06/06/89
4,835,853                       07/199,252                       06/06/89
4,835,854                       07/152,457                       06/06/89
4,835,859                       07/128,366                       06/06/89
4,835,866                       07/131,834                       06/06/89
4,835,872                       06/943,196                       06/06/89
4,835,875                       07/161,465                       06/06/89
4,835,883                       07/135,593                       06/06/89
4,835,885                       07/011,529                       06/06/89
4,835,897                       07/296,934                       06/06/89
4,835,904                       07/137,932                       06/06/89
4,835,905                       07/162,188                       06/06/89
4,835,917                       06/927,315                       06/06/89
4,835,918                       07/242,719                       06/06/89
4,835,919                       07/116,052                       06/06/89
4,835,957                       07/119,032                       06/06/89
4,835,958                       07/170,647                       06/06/89
4,835,970                       06/894,368                       06/06/89
4,835,974                       07/145,607                       06/06/89
4,835,990                       07/229,218                       06/06/89
4,835,991                       07/137,604                       06/06/89
4,835,992                       07/072,349                       06/06/89
4,835,996                       07/180,394                       06/06/89
4,836,003                       07/244,751                       06/06/89
4,836,007                       07/189,299                       06/06/89
4,836,008                       07/300,147                       06/06/89
4,836,010                       07/154,541                       06/06/89
4,836,013                       07/109,262                       06/06/89
4,836,018                       07/258,806                       06/06/89
4,836,030                       06/735,619                       06/06/89
4,836,038                       07/169,876                       06/06/89
4,836,039                       07/095,123                       06/06/89
4,836,043                       06/802,088                       06/06/89
4,836,053                       07/197,497                       06/06/89
4,836,058                       07/129,535                       06/06/89
4,836,059                       07/254,603                       06/06/89
4,836,074                       07/066,089                       06/06/89
4,836,076                       07/214,485                       06/06/89
4,836,077                       07/251,799                       06/06/89
4,836,086                       07/121,968                       06/06/89
4,836,093                       06/881,757                       06/06/89
4,836,097                       07/122,391                       06/06/89
4,836,098                       07/244,604                       06/06/89
4,836,108                       07/202,355                       06/06/89
4,836,115                       07/210,659                       06/06/89
4,836,124                       07/103,508                       06/06/89
4,836,131                       07/100,189                       06/06/89
4,836,139                       07/146,412                       06/06/89
4,836,140                       07/245,936                       06/06/89
4,836,150                       07/173,112                       06/06/89
4,836,151                       07/175,845                       06/06/89
4,836,152                       07/158,212                       06/06/89
4,836,162                       07/113,662                       06/06/89
4,836,171                       07/171,439                       06/06/89
4,836,173                       07/170,894                       06/06/89
4,836,180                       07/182,343                       06/06/89
4,836,181                       07/158,601                       06/06/89
4,836,183                       07/171,344                       06/06/89
4,836,184                       06/591,555                       06/06/89
4,836,187                       07/137,943                       06/06/89
4,836,193                       07/116,457                       06/06/89
4,836,207                       07/095,052                       06/06/89
4,836,209                       07/193,212                       06/06/89
4,836,212                       07/026,606                       06/06/89
4,836,214                       06/936,324                       06/06/89
4,836,215                       07/256,116                       06/06/89
4,836,220                       07/030,737                       06/06/89
4,836,224                       07/137,987                       06/06/89
4,836,225                       07/080,919                       06/06/89
4,836,227                       07/079,694                       06/06/89
4,836,228                       06/938,436                       06/06/89
4,836,246                       07/080,990                       06/06/89
4,836,252                       07/196,607                       06/06/89
4,836,254                       07/264,845                       06/06/89
4,836,265                       07/037,686                       06/06/89
4,836,267                       07/210,903                       06/06/89
4,836,269                       07/186,672                       06/06/89
4,836,275                       07/164,560                       06/06/89
4,836,283                       07/204,061                       06/06/89
4,836,290                       06/908,808                       06/06/89
4,836,293                       07/273,773                       06/06/89
4,836,306                       07/132,814                       06/06/89
4,836,315                       07/212,612                       06/06/89
4,836,317                       07/192,900                       06/06/89
4,836,331                       07/192,969                       06/06/89
4,836,343                       07/166,839                       06/06/89
4,836,351                       07/194,934                       06/06/89
4,836,357                       07/145,636                       06/06/89
4,836,364                       07/162,944                       06/06/89
4,836,368                       07/187,694                       06/06/89
4,836,369                       06/903,272                       06/06/89
4,836,372                       07/242,594                       06/06/89
4,836,380                       07/192,479                       06/06/89
4,836,399                       07/259,470                       06/06/89
4,836,404                       07/207,293                       06/06/89
4,836,414                       07/073,041                       06/06/89
4,836,428                       06/764,303                       06/06/89
4,836,430                       07/157,697                       06/06/89
4,836,434                       06/868,440                       06/06/89
4,836,438                       07/255,866                       06/06/89
4,836,440                       07/007,593                       06/06/89
4,836,447                       07/144,345                       06/06/89
4,836,452                       07/185,514                       06/06/89
4,836,463                       07/068,325                       06/06/89
4,836,475                       07/128,183                       06/06/89
4,836,484                       07/177,377                       06/06/89
4,836,508                       07/189,660                       06/06/89
4,836,509                       07/112,376                       06/06/89
4,836,510                       07/176,859                       06/06/89
4,836,514                       07/141,961                       06/06/89
4,836,519                       07/177,136                       06/06/89
4,836,526                       07/102,177                       06/06/89
4,836,527                       07/182,699                       06/06/89
4,836,539                       07/172,809                       06/06/89
4,836,551                       07/147,744                       06/06/89
4,836,554                       07/192,303                       06/06/89
4,836,558                       07/233,971                       06/06/89
4,836,563                       07/194,411                       06/06/89
4,836,571                       07/163,291                       06/06/89
4,836,574                       07/167,775                       06/06/89
4,836,575                       07/172,801                       06/06/89
4,836,578                       07/138,266                       06/06/89
4,836,587                       07/137,511                       06/06/89
4,836,594                       07/168,371                       06/06/89
4,836,597                       07/125,007                       06/06/89
4,836,599                       07/171,024                       06/06/89
4,836,606                       07/216,368                       06/06/89
4,836,607                       07/181,557                       06/06/89
4,836,608                       07/139,827                       06/06/89
4,836,617                       07/227,106                       06/06/89
4,836,636                       07/118,065                       06/06/89
4,836,637                       07/144,627                       06/06/89
4,836,654                       07/066,720                       06/06/89
4,836,674                       07/096,354                       06/06/89
4,836,678                       07/030,349                       06/06/89
4,836,680                       07/141,970                       06/06/89
4,836,682                       06/881,238                       06/06/89
4,836,685                       07/076,904                       06/06/89
4,836,691                       07/163,299                       06/06/89
4,836,692                       07/282,847                       06/06/89
4,836,704                       07/121,406                       06/06/89
4,836,709                       07/061,560                       06/06/89
4,836,711                       07/198,327                       06/06/89
4,836,730                       06/692,418                       06/06/89
4,836,744                       07/199,168                       06/06/89
4,836,745                       07/097,672                       06/06/89
4,836,749                       07/244,442                       06/06/89
4,836,754                       07/116,367                       06/06/89
4,836,757                       07/206,220                       06/06/89
4,836,761                       07/104,401                       06/06/89
4,836,762                       07/072,178                       06/06/89
4,836,765                       07/128,306                       06/06/89
4,836,770                       07/185,068                       06/06/89
4,836,774                       07/075,217                       06/06/89
4,836,778                       07/053,654                       06/06/89
4,836,785                       07/110,984                       06/06/89
4,836,787                       06/847,403                       06/06/89
4,836,808                       07/184,954                       06/06/89
4,836,809                       07/166,702                       06/06/89
4,836,810                       07/176,886                       06/06/89
4,836,812                       07/169,817                       06/06/89
4,836,817                       07/187,354                       06/06/89
4,836,830                       07/196,899                       06/06/89
4,836,854                       06/625,443                       06/06/89
4,836,863                       07/122,290                       06/06/89
4,836,864                       06/911,738                       06/06/89
4,836,869                       07/125,487                       06/06/89
4,836,874                       07/009,344                       06/06/89
4,836,880                       07/164,427                       06/06/89
4,836,882                       07/243,538                       06/06/89
4,836,885                       07/189,863                       06/06/89
4,836,908                       07/136,886                       06/06/89
4,836,922                       07/084,644                       06/06/89
4,836,924                       07/111,697                       06/06/89
4,836,929                       07/165,902                       06/06/89
4,836,948                       07/139,490                       06/06/89
4,836,959                       07/148,478                       06/06/89
4,836,970                       07/123,325                       06/06/89
4,836,973                       07/150,269                       06/06/89
4,836,977                       07/089,202                       06/06/89
4,836,978                       07/092,138                       06/06/89
4,836,981                       07/148,138                       06/06/89
4,836,985                       07/234,815                       06/06/89
4,836,987                       07/242,115                       06/06/89
4,836,990                       07/088,493                       06/06/89
4,836,994                       07/095,222                       06/06/89
4,837,002                       07/158,745                       06/06/89
4,837,012                       07/063,952                       06/06/89
4,837,017                       07/025,073                       06/06/89
4,837,018                       07/079,803                       06/06/89
4,837,022                       06/905,402                       06/06/89
4,837,026                       06/783,621                       06/06/89
4,837,041                       07/021,968                       06/06/89
4,837,042                       07/077,074                       06/06/89
4,837,053                       07/235,348                       06/06/89
4,837,058                       07/087,673                       06/06/89
4,837,065                       06/937,493                       06/06/89
4,837,073                       07/031,626                       06/06/89
4,837,074                       07/082,605                       06/06/89
4,837,076                       07/112,353                       06/06/89
4,837,080                       07/121,909                       06/06/89
4,837,086                       06/824,726                       06/06/89
4,837,089                       07/132,263                       06/06/89
4,837,093                       07/045,739                       06/06/89
4,837,094                       07/011,646                       06/06/89
4,837,095                       06/836,756                       06/06/89
4,837,099                       07/245,686                       06/06/89
4,837,141                       07/191,781                       06/06/89
4,837,153                       06/643,080                       06/06/89
4,837,157                       06/917,291                       06/06/89
4,837,175                       07/194,532                       06/06/89
4,837,184                       07/141,013                       06/06/89
4,837,197                       07/137,679                       06/06/89
4,837,214                       06/909,664                       06/06/89
4,837,221                       07/031,172                       06/06/89
4,837,222                       06/862,217                       06/06/89
4,837,227                       06/738,507                       06/06/89
4,837,228                       06/404,412                       06/06/89
4,837,232                       06/908,117                       06/06/89
4,837,237                       06/753,686                       06/06/89
4,837,244                       07/217,427                       06/06/89
4,837,247                       07/197,933                       06/06/89
4,837,254                       07/162,848                       06/06/89
4,837,268                       07/134,754                       06/06/89
4,837,271                       07/210,632                       06/06/89
4,837,289                       07/167,806                       06/06/89
4,837,309                       06/583,233                       06/06/89
4,837,312                       06/695,214                       06/06/89
4,837,315                       07/064,642                       06/06/89
4,837,317                       07/105,097                       06/06/89
4,837,319                       07/020,012                       06/06/89
4,837,322                       07/089,895                       06/06/89
4,837,329                       06/571,972                       06/06/89
4,837,332                       06/837,228                       06/06/89
4,837,335                       07/177,345                       06/06/89
4,837,337                       07/151,589                       06/06/89
4,837,345                       07/140,211                       06/06/89
4,837,349                       06/909,397                       06/06/89
4,837,354                       07/096,312                       06/06/89
4,837,358                       06/833,301                       06/06/89
4,837,374                       07/056,126                       06/06/89
4,837,375                       07/005,011                       06/06/89
4,837,396                       07/131,595                       06/06/89
4,837,409                       06/585,646                       06/06/89
4,837,412                       07/208,721                       06/06/89
4,837,413                       07/113,314                       06/06/89
4,837,414                       07/131,284                       06/06/89
4,837,416                       06/943,943                       06/06/89
4,837,417                       07/164,784                       06/06/89
4,837,418                       07/014,805                       06/06/89
4,837,423                       07/115,444                       06/06/89
4,837,426                       07/003,954                       06/06/89
4,837,433                       07/083,599                       06/06/89
4,837,434                       07/071,492                       06/06/89
4,837,437                       07/114,237                       06/06/89
4,837,439                       07/159,657                       06/06/89
4,837,444                       07/194,983                       06/06/89
4,837,445                       07/230,347                       06/06/89
4,837,458                       07/086,823                       06/06/89
4,837,459                       07/072,362                       06/06/89
4,837,466                       07/122,806                       06/06/89
4,837,472                       07/151,801                       06/06/89
4,837,473                       07/148,490                       06/06/89
4,837,477                       07/152,914                       06/06/89
4,837,486                       07/213,464                       06/06/89
4,837,487                       07/113,344                       06/06/89
4,837,488                       07/190,906                       06/06/89
4,837,490                       07/224,881                       06/06/89
4,837,493                       06/940,625                       06/06/89
4,837,495                       07/108,170                       06/06/89
4,837,504                       06/857,061                       06/06/89
4,837,515                       07/026,891                       06/06/89
4,837,516                       07/222,904                       06/06/89
4,837,524                       07/154,356                       06/06/89
4,837,525                       07/168,448                       06/06/89
4,837,528                       07/156,798                       06/06/89
4,837,534                       07/150,251                       06/06/89
4,837,535                       07/293,666                       06/06/89
4,837,545                       07/161,069                       06/06/89
4,837,550                       07/047,112                       06/06/89
4,837,560                       07/121,788                       06/06/89
4,837,562                       07/083,003                       06/06/89
4,837,577                       07/194,618                       06/06/89
4,837,580                       07/049,741                       06/06/89
4,837,581                       07/048,647                       06/06/89
4,837,584                       07/140,567                       06/06/89
4,837,590                       07/189,860                       06/06/89
4,837,594                       07/160,407                       06/06/89
4,837,595                       07/163,823                       06/06/89
4,837,598                       07/150,256                       06/06/89
4,837,600                       07/105,828                       06/06/89
4,837,603                       06/925,102                       06/06/89
4,837,612                       07/163,494                       06/06/89
4,837,617                       07/156,620                       06/06/89
4,837,644                       07/166,877                       06/06/89
4,837,645                       07/033,389                       06/06/89
4,837,651                       06/942,492                       06/06/89
4,837,657                       07/134,481                       06/06/89
4,837,661                       07/254,228                       06/06/89
4,837,662                       07/102,338                       06/06/89
4,837,664                       07/247,865                       06/06/89
4,837,674                       07/012,162                       06/06/89
4,837,677                       06/744,850                       06/06/89
4,837,684                       07/153,557                       06/06/89
4,837,689                       06/915,021                       06/06/89
4,837,696                       07/010,515                       06/06/89
4,837,706                       06/918,823                       06/06/89
4,837,710                       06/806,988                       06/06/89
4,837,723                       07/008,995                       06/06/89
4,837,727                       06/835,883                       06/06/89
4,837,734                       07/019,601                       06/06/89
4,837,737                       06/892,281                       06/06/89
4,837,745                       07/010,778                       06/06/89
4,837,752                       07/243,454                       06/06/89
4,837,758                       06/909,355                       06/06/89
4,837,766                       07/029,556                       06/06/89
4,837,768                       07/248,560                       06/06/89
4,837,779                       07/180,942                       06/06/89
4,837,785                       06/504,150                       06/06/89
4,837,786                       06/894,316                       06/06/89
4,837,787                       07/054,418                       06/06/89
4,837,791                       07/162,096                       06/06/89
4,837,797                       07/148,100                       06/06/89
4,837,799                       07/249,220                       06/06/89
4,837,805                       07/064,616                       06/06/89
4,837,816                       07/136,611                       06/06/89
4,837,818                       06/852,609                       06/06/89
4,837,821                       06/568,312                       06/06/89
4,837,822                       06/849,472                       06/06/89
4,837,834                       07/189,994                       06/06/89
4,837,840                       07/019,463                       06/06/89
4,837,841                       07/061,285                       06/06/89
4,837,849                       07/171,053                       06/06/89
4,837,856                       07/045,469                       06/06/89
4,837,857                       06/927,807                       06/06/89

                     PATENTS WHICH EXPIRED ON June 1, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

5,214,800                       07/515,221                       06/01/93
5,214,803                       07/804,088                       06/01/93
5,214,808                       07/962,648                       06/01/93
5,214,809                       07/905,308                       06/01/93
5,214,819                       07/761,958                       06/01/93
5,214,822                       07/814,762                       06/01/93
5,214,823                       07/647,055                       06/01/93
5,214,840                       07/550,698                       06/01/93
5,214,847                       07/807,740                       06/01/93
5,214,852                       07/897,022                       06/01/93
5,214,855                       07/805,573                       06/01/93
5,214,859                       07/935,025                       06/01/93
5,214,869                       07/556,864                       06/01/93
5,214,870                       07/816,322                       06/01/93
5,214,871                       07/640,044                       06/01/93
5,214,884                       07/872,343                       06/01/93
5,214,886                       07/897,825                       06/01/93
5,214,887                       07/654,724                       06/01/93
5,214,893                       07/533,859                       06/01/93
5,214,896                       07/908,142                       06/01/93
5,214,897                       07/798,552                       06/01/93
5,214,918                       07/625,827                       06/01/93
5,214,924                       07/808,159                       06/01/93
5,214,938                       07/818,154                       06/01/93
5,214,939                       07/797,583                       06/01/93
5,214,943                       07/696,025                       06/01/93
5,214,952                       07/745,697                       06/01/93
5,214,956                       07/597,122                       06/01/93
5,214,958                       07/834,812                       06/01/93
5,214,964                       07/749,193                       06/01/93
5,214,965                       07/772,964                       06/01/93
5,214,970                       07/706,782                       06/01/93
5,214,973                       07/820,772                       06/01/93
5,214,975                       07/615,906                       06/01/93
5,215,004                       07/906,493                       06/01/93
5,215,014                       07/835,191                       06/01/93
5,215,018                       07/824,557                       06/01/93
5,215,019                       07/892,645                       06/01/93
5,215,023                       07/853,805                       06/01/93
5,215,024                       07/868,426                       06/01/93
5,215,026                       07/827,128                       06/01/93
5,215,030                       07/953,844                       06/01/93
5,215,034                       07/802,744                       06/01/93
5,215,037                       07/800,457                       06/01/93
5,215,041                       07/774,474                       06/01/93
5,215,045                       07/910,728                       06/01/93
5,215,052                       07/925,255                       06/01/93
5,215,065                       07/916,604                       06/01/93
5,215,070                       07/703,154                       06/01/93
5,215,071                       07/642,823                       06/01/93
5,215,073                       07/890,090                       06/01/93
5,215,074                       07/890,249                       06/01/93
5,215,099                       07/707,244                       06/01/93
5,215,106                       07/973,046                       06/01/93
5,215,107                       07/883,277                       06/01/93
5,215,110                       07/772,728                       06/01/93
5,215,112                       07/851,290                       06/01/93
5,215,114                       07/781,826                       06/01/93
5,215,129                       07/765,384                       06/01/93
5,215,131                       07/791,511                       06/01/93
5,215,139                       07/789,368                       06/01/93
5,215,141                       07/897,338                       06/01/93
5,215,144                       07/837,321                       06/01/93
5,215,150                       07/657,534                       06/01/93
5,215,155                       07/836,871                       06/01/93
5,215,158                       07/767,473                       06/01/93
5,215,168                       07/783,871                       06/01/93
5,215,174                       07/886,196                       06/01/93
5,215,177                       07/941,471                       06/01/93
5,215,180                       07/711,019                       06/01/93
5,215,181                       07/837,009                       06/01/93
5,215,194                       07/737,954                       06/01/93
5,215,198                       07/872,540                       06/01/93
5,215,199                       07/821,583                       06/01/93
5,215,201                       07/867,328                       06/01/93
5,215,202                       07/857,582                       06/01/93
5,215,204                       07/848,253                       06/01/93
5,215,207                       07/773,703                       06/01/93
5,215,214                       07/756,037                       06/01/93
5,215,215                       07/640,248                       06/01/93
5,215,219                       07/828,517                       06/01/93
5,215,220                       07/693,795                       06/01/93
5,215,221                       07/880,146                       06/01/93
5,215,227                       07/911,497                       06/01/93
5,215,229                       07/818,860                       06/01/93
5,215,233                       07/539,354                       06/01/93
5,215,236                       07/849,617                       06/01/93
5,215,244                       07/840,327                       06/01/93
5,215,249                       07/984,012                       06/01/93
5,215,251                       07/774,698                       06/01/93
5,215,253                       07/728,051                       06/01/93
5,215,261                       07/899,284                       06/01/93
5,215,273                       07/794,271                       06/01/93
5,215,274                       07/766,501                       06/01/93
5,215,275                       07/658,071                       06/01/93
5,215,277                       07/735,160                       06/01/93
5,215,285                       07/806,283                       06/01/93
5,215,286                       07/888,897                       06/01/93
5,215,291                       07/519,515                       06/01/93
5,215,294                       07/759,523                       06/01/93
5,215,298                       07/903,298                       06/01/93
5,215,299                       07/858,801                       06/01/93
5,215,305                       07/884,708                       06/01/93
5,215,306                       07/765,309                       06/01/93
5,215,314                       07/921,797                       06/01/93
5,215,327                       07/678,421                       06/01/93
5,215,329                       07/780,107                       06/01/93
5,215,331                       07/790,688                       06/01/93
5,215,333                       07/832,360                       06/01/93
5,215,334                       07/919,135                       06/01/93
5,215,337                       07/669,162                       06/01/93
5,215,340                       07/784,523                       06/01/93
5,215,342                       07/974,886                       06/01/93
5,215,343                       07/829,048                       06/01/93
5,215,344                       07/601,036                       06/01/93
5,215,345                       07/901,924                       06/01/93
5,215,347                       07/774,981                       06/01/93
5,215,352                       07/808,184                       06/01/93
5,215,358                       07/754,357                       06/01/93
5,215,362                       07/738,248                       06/01/93
5,215,363                       07/826,047                       06/01/93
5,215,366                       07/739,293                       06/01/93
5,215,368                       07/905,904                       06/01/93
5,215,374                       07/691,268                       06/01/93
5,215,385                       07/883,487                       06/01/93
5,215,390                       07/719,256                       06/01/93
5,215,397                       07/859,680                       06/01/93
5,215,400                       07/897,948                       06/01/93
5,215,403                       07/853,218                       06/01/93
5,215,405                       07/699,667                       06/01/93
5,215,408                       07/679,905                       06/01/93
5,215,409                       07/730,619                       06/01/93
5,215,411                       07/673,364                       06/01/93
5,215,419                       07/925,087                       06/01/93
5,215,421                       07/790,756                       06/01/93
5,215,429                       07/819,022                       06/01/93
5,215,433                       07/883,805                       06/01/93
5,215,436                       07/795,763                       06/01/93
5,215,440                       07/785,598                       06/01/93
5,215,443                       07/767,160                       06/01/93
5,215,445                       07/967,393                       06/01/93
5,215,450                       07/669,641                       06/01/93
5,215,455                       07/736,950                       06/01/93
5,215,456                       07/901,842                       06/01/93
5,215,462                       07/748,751                       06/01/93
5,215,464                       07/788,066                       06/01/93
5,215,465                       07/788,073                       06/01/93
5,215,470                       07/906,065                       06/01/93
5,215,473                       07/878,803                       06/01/93
5,215,485                       07/872,128                       06/01/93
5,215,492                       07/725,980                       06/01/93
5,215,496                       07/567,832                       06/01/93
5,215,508                       07/891,197                       06/01/93
5,215,509                       07/884,906                       06/01/93
5,215,516                       07/925,818                       06/01/93
5,215,520                       07/760,982                       06/01/93
5,215,521                       07/799,355                       06/01/93
5,215,523                       07/791,475                       06/01/93
5,215,524                       07/978,181                       06/01/93
5,215,527                       07/805,780                       06/01/93
5,215,531                       07/903,764                       06/01/93
5,215,532                       07/675,436                       06/01/93
5,215,537                       07/581,697                       06/01/93
5,215,540                       07/828,420                       06/01/93
5,215,554                       07/880,930                       06/01/93
5,215,556                       07/868,917                       06/01/93
5,215,558                       07/713,298                       06/01/93
5,215,562                       07/911,279                       06/01/93
5,215,565                       07/817,965                       06/01/93
5,215,570                       07/637,097                       06/01/93
5,215,581                       07/731,687                       06/01/93
5,215,589                       07/915,908                       06/01/93
5,215,596                       07/904,381                       06/01/93
5,215,597                       07/390,851                       06/01/93
5,215,600                       07/733,894                       06/01/93
5,215,605                       07/735,536                       06/01/93
5,215,606                       07/633,157                       06/01/93
5,215,607                       07/655,406                       06/01/93
5,215,608                       07/469,917                       06/01/93
5,215,612                       07/570,654                       06/01/93
5,215,621                       07/953,719                       06/01/93
5,215,624                       07/807,725                       06/01/93
5,215,625                       07/844,546                       06/01/93
5,215,632                       07/516,396                       06/01/93
5,215,643                       07/364,437                       06/01/93
5,215,651                       07/714,996                       06/01/93
5,215,655                       07/783,408                       06/01/93
5,215,661                       07/757,145                       06/01/93
5,215,664                       07/885,069                       06/01/93
5,215,666                       07/902,515                       06/01/93
5,215,667                       07/747,597                       06/01/93
5,215,668                       07/739,113                       06/01/93
5,215,688                       07/685,228                       06/01/93
5,215,689                       07/664,664                       06/01/93
5,215,690                       07/632,922                       06/01/93
5,215,696                       07/857,961                       06/01/93
5,215,697                       07/849,207                       06/01/93
5,215,703                       07/745,627                       06/01/93
5,215,711                       07/863,909                       06/01/93
5,215,714                       07/709,062                       06/01/93
5,215,719                       07/684,598                       06/01/93
5,215,720                       07/662,655                       06/01/93
5,215,722                       07/766,181                       06/01/93
5,215,724                       07/755,168                       06/01/93
5,215,727                       07/857,558                       06/01/93
5,215,738                       07/532,186                       06/01/93
5,215,743                       07/181,077                       06/01/93
5,215,757                       07/673,879                       06/01/93
5,215,760                       07/881,534                       06/01/93
5,215,761                       07/779,501                       06/01/93
5,215,762                       07/730,592                       06/01/93
5,215,767                       07/844,138                       06/01/93
5,215,770                       07/851,274                       06/01/93
5,215,776                       07/788,771                       06/01/93
5,215,780                       07/550,579                       06/01/93
5,215,783                       07/719,951                       06/01/93
5,215,786                       07/747,618                       06/01/93
5,215,788                       07/718,986                       06/01/93
5,215,791                       07/682,437                       06/01/93
5,215,800                       07/734,342                       06/01/93
5,215,804                       07/785,603                       06/01/93
5,215,809                       07/761,563                       06/01/93
5,215,815                       07/956,161                       06/01/93
5,215,819                       07/621,403                       06/01/93
5,215,823                       07/698,500                       06/01/93
5,215,824                       07/623,144                       06/01/93
5,215,825                       07/809,867                       06/01/93
5,215,828                       07/932,308                       06/01/93
5,215,842                       07/638,544                       06/01/93
5,215,850                       07/801,503                       06/01/93
5,215,851                       07/754,662                       06/01/93
5,215,858                       07/326,740                       06/01/93
5,215,862                       07/646,830                       06/01/93
5,215,863                       07/774,389                       06/01/93
5,215,864                       07/590,152                       06/01/93
5,215,865                       07/758,411                       06/01/93
5,215,873                       07/870,209                       06/01/93
5,215,875                       07/712,258                       06/01/93
5,215,878                       07/716,046                       06/01/93
5,215,881                       07/537,855                       06/01/93
5,215,883                       07/550,713                       06/01/93
5,215,886                       07/616,628                       06/01/93
5,215,887                       07/801,657                       06/01/93
5,215,888                       07/456,792                       06/01/93
5,215,894                       07/841,923                       06/01/93
5,215,899                       07/569,991                       06/01/93
5,215,900                       07/712,216                       06/01/93
5,215,901                       07/908,878                       06/01/93
5,215,915                       07/686,591                       06/01/93
5,215,922                       07/831,190                       06/01/93
5,215,927                       07/739,911                       06/01/93
5,215,935                       07/750,839                       06/01/93
5,215,938                       07/567,470                       06/01/93
5,215,939                       07/832,024                       06/01/93
5,215,944                       07/737,110                       06/01/93
5,215,950                       07/704,153                       06/01/93
5,215,952                       07/873,373                       06/01/93
5,215,960                       07/730,770                       06/01/93
5,215,961                       07/543,132                       06/01/93
5,215,963                       07/426,150                       06/01/93
5,215,975                       07/763,716                       06/01/93
5,215,988                       07/745,268                       06/01/93
5,215,989                       07/730,317                       06/01/93
5,215,993                       07/731,683                       06/01/93
5,215,998                       07/629,536                       06/01/93
5,215,999                       07/777,336                       06/01/93
5,216,004                       07/582,629                       06/01/93
5,216,005                       07/623,095                       06/01/93
5,216,007                       07/823,041                       06/01/93
5,216,010                       07/692,728                       06/01/93
5,216,015                       07/650,494                       06/01/93
5,216,018                       07/836,229                       06/01/93
5,216,026                       07/554,218                       06/01/93
5,216,036                       07/953,810                       06/01/93
5,216,038                       07/781,370                       06/01/93
5,216,042                       07/727,707                       06/01/93
5,216,047                       07/604,774                       06/01/93
5,216,053                       07/619,283                       06/01/93
5,216,055                       07/811,530                       06/01/93
5,216,062                       07/921,391                       06/01/93
5,216,065                       07/619,798                       06/01/93
5,216,068                       07/626,961                       06/01/93
5,216,072                       07/511,181                       06/01/93
5,216,084                       07/523,609                       06/01/93
5,216,100                       07/803,788                       06/01/93
5,216,101                       07/953,135                       06/01/93
5,216,112                       07/745,422                       06/01/93
5,216,117                       07/831,145                       06/01/93
5,216,119                       07/914,235                       06/01/93
5,216,125                       07/368,794                       06/01/93
5,216,136                       07/674,440                       06/01/93
5,216,139                       07/620,457                       06/01/93
5,216,142                       07/521,075                       06/01/93
5,216,145                       07/698,042                       06/01/93
5,216,152                       07/869,972                       06/01/93
5,216,157                       07/686,443                       06/01/93
5,216,177                       07/695,010                       06/01/93
5,216,178                       07/745,623                       06/01/93
5,216,182                       07/933,836                       06/01/93
5,216,185                       07/625,575                       06/01/93
5,216,187                       07/727,193                       06/01/93
5,216,195                       07/813,810                       06/01/93
5,216,197                       07/718,494                       06/01/93
5,216,198                       07/845,027                       06/01/93
5,216,206                       07/622,360                       06/01/93
5,216,209                       07/805,380                       06/01/93
5,216,212                       07/876,416                       06/01/93
5,216,216                       07/724,218                       06/01/93
5,216,229                       07/623,513                       06/01/93
5,216,230                       07/816,234                       06/01/93
5,216,239                       07/747,293                       06/01/93
5,216,240                       07/939,071                       06/01/93
5,216,254                       07/517,588                       06/01/93
5,216,257                       07/549,842                       06/01/93
5,216,258                       07/848,543                       06/01/93
5,216,261                       07/810,090                       06/01/93
5,216,273                       07/762,940                       06/01/93
5,216,274                       07/772,210                       06/01/93
5,216,286                       07/715,520                       06/01/93
5,216,296                       07/896,929                       06/01/93
5,216,323                       07/865,800                       06/01/93
5,216,328                       07/785,412                       06/01/93
5,216,332                       07/795,228                       06/01/93
5,216,337                       07/948,661                       06/01/93
5,216,340                       07/850,611                       06/01/93
5,216,344                       07/571,644                       06/01/93
5,216,358                       07/671,412                       06/01/93
5,216,362                       07/774,532                       06/01/93
5,216,382                       07/811,008                       06/01/93
5,216,387                       07/757,075                       06/01/93
5,216,391                       07/872,283                       06/01/93
5,216,393                       07/822,995                       06/01/93
5,216,398                       07/818,914                       06/01/93
5,216,402                       07/823,944                       06/01/93
5,216,403                       07/955,094                       06/01/93
5,216,415                       07/806,365                       06/01/93
5,216,416                       07/746,854                       06/01/93
5,216,419                       07/285,099                       06/01/93
5,216,424                       07/707,145                       06/01/93
5,216,427                       07/607,574                       06/01/93
5,216,428                       06/611,059                       06/01/93
5,216,435                       07/499,341                       06/01/93
5,216,442                       07/791,687                       06/01/93
5,216,454                       07/553,885                       06/01/93
5,216,456                       07/604,547                       06/01/93
5,216,467                       07/828,098                       06/01/93
5,216,474                       07/788,540                       06/01/93
5,216,476                       07/775,844                       06/01/93
5,216,481                       07/808,620                       06/01/93
5,216,485                       07/754,794                       06/01/93
5,216,486                       07/810,872                       06/01/93
5,216,487                       07/704,091                       06/01/93
5,216,491                       07/775,604                       06/01/93
5,216,492                       07/822,741                       06/01/93
5,216,493                       07/836,873                       06/01/93
5,216,498                       07/864,164                       06/01/93
5,216,505                       07/565,977                       06/01/93
5,216,510                       07/763,986                       06/01/93
5,216,512                       07/738,394                       06/01/93
5,216,515                       07/704,598                       06/01/93
5,216,520                       07/541,922                       06/01/93
5,216,521                       07/641,544                       06/01/93
5,216,524                       07/525,021                       06/01/93
5,216,528                       07/712,312                       06/01/93
5,216,532                       07/578,796                       06/01/93
5,216,536                       07/798,622                       06/01/93
5,216,542                       07/599,988                       06/01/93
5,216,543                       07/021,458                       06/01/93
5,216,563                       07/759,547                       06/01/93
5,216,564                       07/732,046                       06/01/93
5,216,566                       07/690,573                       06/01/93
5,216,567                       07/761,811                       06/01/93
5,216,568                       07/449,925                       06/01/93
5,216,577                       07/782,397                       06/01/93
5,216,579                       07/827,238                       06/01/93
5,216,582                       07/832,966                       06/01/93
5,216,583                       07/731,045                       06/01/93
5,216,587                       07/862,363                       06/01/93
5,216,602                       07/432,870                       06/01/93
5,216,603                       07/600,144                       06/01/93
5,216,604                       07/442,076                       06/01/93
5,216,611                       07/652,762                       06/01/93
5,216,618                       07/620,042                       06/01/93
5,216,623                       07/534,138                       06/01/93
5,216,624                       07/824,416                       06/01/93
5,216,630                       07/675,628                       06/01/93
5,216,652                       07/824,600                       06/01/93
5,216,653                       07/705,825                       06/01/93
5,216,659                       07/757,748                       06/01/93
5,216,667                       07/705,486                       06/01/93
5,216,670                       07/725,718                       06/01/93
5,216,688                       07/781,171                       06/01/93
5,216,695                       07/715,546                       06/01/93
5,216,696                       07/730,426                       06/01/93
5,216,697                       07/567,154                       06/01/93
5,216,711                       07/741,632                       06/01/93
5,216,721                       07/691,557                       06/01/93
5,216,722                       07/794,115                       06/01/93
5,216,725                       07/606,578                       06/01/93
5,216,730                       07/810,179                       06/01/93
5,216,732                       07/848,034                       06/01/93
5,216,737                       07/834,417                       06/01/93
5,216,745                       07/420,899                       06/01/93

                     PATENTS WHICH EXPIRED ON June 3, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

5,634,214                       08/323,603                       06/03/97
5,634,217                       08/434,066                       06/03/97
5,634,220                       08/525,164                       06/03/97
5,634,221                       08/617,499                       06/03/97
5,634,226                       08/534,673                       06/03/97
5,634,227                       08/582,892                       06/03/97
5,634,228                       08/519,722                       06/03/97
5,634,232                       08/619,367                       06/03/97
5,634,233                       08/373,089                       06/03/97
5,634,237                       08/412,890                       06/03/97
5,634,238                       08/411,675                       06/03/97
5,634,239                       08/640,207                       06/03/97
5,634,246                       08/559,876                       06/03/97
5,634,256                       08/447,454                       06/03/97
5,634,270                       08/528,808                       06/03/97
5,634,277                       08/532,406                       06/03/97
5,634,278                       08/530,873                       06/03/97
5,634,279                       08/612,236                       06/03/97
5,634,280                       08/532,788                       06/03/97
5,634,281                       08/440,909                       06/03/97
5,634,288                       08/375,744                       06/03/97
5,634,289                       08/452,299                       06/03/97
5,634,290                       08/665,917                       06/03/97
5,634,291                       08/581,908                       06/03/97
5,634,295                       08/513,786                       06/03/97
5,634,299                       08/431,278                       06/03/97
5,634,301                       08/582,176                       06/03/97
5,634,307                       08/403,074                       06/03/97
5,634,323                       08/430,481                       06/03/97
5,634,330                       08/656,418                       06/03/97
5,634,341                       08/566,486                       06/03/97
5,634,343                       08/185,651                       06/03/97
5,634,364                       08/566,619                       06/03/97
5,634,365                       08/279,889                       06/03/97
5,634,367                       08/395,928                       06/03/97
5,634,372                       08/450,798                       06/03/97
5,634,376                       08/551,916                       06/03/97
5,634,378                       08/397,422                       06/03/97
5,634,386                       08/656,888                       06/03/97
5,634,387                       08/292,788                       06/03/97
5,634,388                       08/474,961                       06/03/97
5,634,396                       08/570,659                       06/03/97
5,634,407                       08/553,323                       06/03/97
5,634,408                       08/584,744                       06/03/97
5,634,411                       08/450,856                       06/03/97
5,634,412                       08/512,484                       06/03/97
5,634,415                       08/636,398                       06/03/97
5,634,417                       08/507,708                       06/03/97
5,634,419                       08/669,758                       06/03/97
5,634,426                       08/393,088                       06/03/97
5,634,428                       08/587,198                       06/03/97
5,634,429                       08/428,021                       06/03/97
5,634,432                       08/471,321                       06/03/97
5,634,435                       08/354,275                       06/03/97
5,634,437                       08/514,531                       06/03/97
5,634,438                       08/366,229                       06/03/97
5,634,439                       08/552,085                       06/03/97
5,634,455                       08/579,858                       06/03/97
5,634,458                       08/176,768                       06/03/97
5,634,462                       08/411,438                       06/03/97
5,634,467                       08/332,946                       06/03/97
5,634,471                       08/379,662                       06/03/97
5,634,478                       08/570,947                       06/03/97
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