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 March 21, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

4,813,097                       07/122,910                       03/21/89
4,813,109                       07/087,418                       03/21/89
4,813,111                       06/733,225                       03/21/89
4,813,113                       07/133,798                       03/21/89
4,813,123                       07/148,380                       03/21/89
4,813,130                       07/041,399                       03/21/89
4,813,132                       06/894,676                       03/21/89
4,813,133                       07/080,878                       03/21/89
4,813,137                       07/052,158                       03/21/89
4,813,164                       07/141,979                       03/21/89
4,813,175                       07/077,857                       03/21/89
4,813,177                       07/128,941                       03/21/89
4,813,186                       07/103,532                       03/21/89
4,813,195                       07/106,122                       03/21/89
4,813,199                       07/188,351                       03/21/89
4,813,202                       07/053,199                       03/21/89
4,813,203                       07/098,419                       03/21/89
4,813,215                       07/047,718                       03/21/89
4,813,217                       07/079,581                       03/21/89
4,813,218                       07/122,171                       03/21/89
4,813,221                       07/131,257                       03/21/89
4,813,222                       07/173,375                       03/21/89
4,813,227                       06/580,171                       03/21/89
4,813,235                       07/060,150                       03/21/89
4,813,238                       07/173,144                       03/21/89
4,813,241                       07/085,940                       03/21/89
4,813,258                       07/003,348                       03/21/89
4,813,259                       07/096,022                       03/21/89
4,813,267                       07/022,147                       03/21/89
4,813,272                       07/080,102                       03/21/89
4,813,288                       07/007,188                       03/21/89
4,813,293                       07/004,440                       03/21/89
4,813,296                       07/084,410                       03/21/89
4,813,298                       07/078,482                       03/21/89
4,813,300                       07/082,919                       03/21/89
4,813,301                       07/083,495                       03/21/89
4,813,307                       07/067,624                       03/21/89
4,813,312                       07/044,777                       03/21/89
4,813,320                       07/084,630                       03/21/89
4,813,321                       07/058,817                       03/21/89
4,813,327                       07/198,776                       03/21/89
4,813,331                       07/034,469                       03/21/89
4,813,336                       07/025,279                       03/21/89
4,813,337                       07/124,957                       03/21/89
4,813,339                       06/795,462                       03/21/89
4,813,342                       07/063,251                       03/21/89
4,813,349                       07/035,635                       03/21/89
4,813,357                       07/043,604                       03/21/89
4,813,358                       07/200,354                       03/21/89
4,813,364                       07/179,074                       03/21/89
4,813,369                       07/111,519                       03/21/89
4,813,373                       07/049,969                       03/21/89
4,813,380                       07/129,394                       03/21/89
4,813,382                       07/184,940                       03/21/89
4,813,389                       07/110,287                       03/21/89
4,813,393                       07/113,132                       03/21/89
4,813,400                       07/079,139                       03/21/89
4,813,413                       07/055,029                       03/21/89
4,813,419                       07/172,945                       03/21/89
4,813,424                       07/137,228                       03/21/89
4,813,429                       07/046,193                       03/21/89
4,813,444                       07/116,530                       03/21/89
4,813,446                       07/150,307                       03/21/89
4,813,464                       07/096,505                       03/21/89
4,813,474                       07/130,322                       03/21/89
4,813,477                       07/009,164                       03/21/89
4,813,483                       07/184,521                       03/21/89
4,813,494                       07/019,005                       03/21/89
4,813,497                       07/181,648                       03/21/89
4,813,502                       07/211,660                       03/21/89
4,813,504                       07/199,598                       03/21/89
4,813,518                       06/443,114                       03/21/89
4,813,534                       07/067,318                       03/21/89
4,813,535                       07/093,858                       03/21/89
4,813,542                       06/887,592                       03/21/89
4,813,559                       07/169,270                       03/21/89
4,813,566                       07/138,209                       03/21/89
4,813,570                       07/163,705                       03/21/89
4,813,571                       06/930,744                       03/21/89
4,813,580                       07/097,694                       03/21/89
4,813,582                       07/070,354                       03/21/89
4,813,587                       07/046,610                       03/21/89
4,813,589                       07/178,030                       03/21/89
4,813,593                       06/506,679                       03/21/89
4,813,594                       07/137,563                       03/21/89
4,813,609                       07/012,498                       03/21/89
4,813,612                       07/177,903                       03/21/89
4,813,620                       07/134,936                       03/21/89
4,813,628                       07/056,444                       03/21/89
4,813,629                       07/164,335                       03/21/89
4,813,643                       07/102,413                       03/21/89
4,813,647                       07/126,076                       03/21/89
4,813,655                       07/180,485                       03/21/89
4,813,669                       07/094,794                       03/21/89
4,813,671                       06/910,051                       03/21/89
4,813,675                       07/164,608                       03/21/89
4,813,679                       07/024,536                       03/21/89
4,813,689                       07/137,152                       03/21/89
4,813,695                       07/137,165                       03/21/89
4,813,706                       07/094,690                       03/21/89
4,813,709                       07/036,344                       03/21/89
4,813,713                       07/044,252                       03/21/89
4,813,721                       07/097,215                       03/21/89
4,813,741                       07/127,501                       03/21/89
4,813,757                       07/122,343                       03/21/89
4,813,765                       07/059,878                       03/21/89
4,813,768                       07/111,659                       03/21/89
4,813,782                       07/020,080                       03/21/89
4,813,792                       07/201,799                       03/21/89
4,813,793                       07/201,723                       03/21/89
4,813,794                       07/195,921                       03/21/89
4,813,801                       07/040,391                       03/21/89
4,813,813                       07/016,712                       03/21/89
4,813,815                       07/110,732                       03/21/89
4,813,819                       07/178,829                       03/21/89
4,813,820                       07/105,346                       03/21/89
4,813,835                       07/086,250                       03/21/89
4,813,844                       07/021,059                       03/21/89
4,813,847                       07/050,005                       03/21/89
4,813,850                       07/178,724                       03/21/89
4,813,852                       07/166,444                       03/21/89
4,813,864                       07/124,255                       03/21/89
4,813,867                       07/060,395                       03/21/89
4,813,873                       07/012,821                       03/21/89
4,813,877                       07/077,510                       03/21/89
4,813,878                       07/125,467                       03/21/89
4,813,897                       07/181,685                       03/21/89
4,813,915                       07/195,004                       03/21/89
4,813,920                       07/090,064                       03/21/89
4,813,922                       07/114,805                       03/21/89
4,813,942                       07/026,950                       03/21/89
4,813,969                       06/769,719                       03/21/89
4,813,970                       07/154,341                       03/21/89
4,813,985                       07/014,826                       03/21/89
4,813,986                       07/107,749                       03/21/89
4,813,991                       07/196,595                       03/21/89
4,813,995                       07/157,079                       03/21/89
4,814,009                       07/119,861                       03/21/89
4,814,016                       07/115,175                       03/21/89
4,814,018                       07/064,463                       03/21/89
4,814,034                       07/141,027                       03/21/89
4,814,041                       07/099,856                       03/21/89
4,814,043                       07/102,837                       03/21/89
4,814,044                       07/096,066                       03/21/89
4,814,051                       07/149,778                       03/21/89
4,814,054                       07/251,265                       03/21/89
4,814,071                       07/028,769                       03/21/89
4,814,078                       07/096,906                       03/21/89
4,814,082                       06/920,365                       03/21/89
4,814,083                       06/935,312                       03/21/89
4,814,085                       07/226,085                       03/21/89
4,814,090                       07/091,221                       03/21/89
4,814,091                       07/067,073                       03/21/89
4,814,093                       07/096,467                       03/21/89
4,814,110                       06/883,626                       03/21/89
4,814,112                       07/119,366                       03/21/89
4,814,115                       07/121,847                       03/21/89
4,814,117                       07/135,720                       03/21/89
4,814,120                       07/041,652                       03/21/89
4,814,121                       06/562,132                       03/21/89
4,814,122                       06/912,003                       03/21/89
4,814,125                       07/098,465                       03/21/89
4,814,134                       07/047,442                       03/21/89
4,814,135                       07/136,719                       03/21/89
4,814,143                       07/081,370                       03/21/89
4,814,159                       07/119,286                       03/21/89
4,814,162                       06/798,364                       03/21/89
4,814,166                       06/867,003                       03/21/89
4,814,169                       06/878,526                       03/21/89
4,814,171                       07/077,426                       03/21/89
4,814,184                       07/154,755                       03/21/89
4,814,190                       07/132,251                       03/21/89
4,814,192                       07/123,451                       03/21/89
4,814,194                       07/153,528                       03/21/89
4,814,199                       07/189,658                       03/21/89
4,814,204                       07/116,596                       03/21/89
4,814,232                       07/029,915                       03/21/89
4,814,234                       07/030,408                       03/21/89
4,814,236                       07/064,721                       03/21/89
4,814,238                       07/077,002                       03/21/89
4,814,244                       07/159,687                       03/21/89
4,814,250                       07/026,809                       03/21/89
4,814,255                       07/136,384                       03/21/89
4,814,262                       07/107,270                       03/21/89
4,814,267                       06/946,813                       03/21/89
4,814,270                       06/650,200                       03/21/89
4,814,274                       07/009,926                       03/21/89
4,814,280                       07/082,518                       03/21/89
4,814,294                       07/079,564                       03/21/89
4,814,295                       06/935,198                       03/21/89
4,814,305                       07/119,506                       03/21/89
4,814,307                       07/067,827                       03/21/89
4,814,308                       07/110,872                       03/21/89
4,814,311                       07/132,735                       03/21/89
4,814,312                       07/132,751                       03/21/89
4,814,313                       07/132,752                       03/21/89
4,814,323                       06/843,563                       03/21/89
4,814,327                       07/077,359                       03/21/89
4,814,330                       07/024,798                       03/21/89
4,814,335                       07/066,262                       03/21/89
4,814,340                       06/928,157                       03/21/89
4,814,350                       06/905,606                       03/21/89
4,814,359                       07/139,758                       03/21/89
4,814,360                       07/113,295                       03/21/89
4,814,379                       07/179,597                       03/21/89
4,814,389                       07/071,203                       03/21/89
4,814,390                       07/133,425                       03/21/89
4,814,403                       07/105,745                       03/21/89
4,814,417                       07/170,365                       03/21/89
4,814,426                       07/073,578                       03/21/89
4,814,439                       07/087,860                       03/21/89
4,814,443                       07/085,428                       03/21/89
4,814,446                       07/000,887                       03/21/89
4,814,450                       07/148,317                       03/21/89
4,814,458                       07/010,304                       03/21/89
4,814,463                       06/815,217                       03/21/89
4,814,465                       07/084,833                       03/21/89
4,814,466                       07/179,370                       03/21/89
4,814,493                       06/510,845                       03/21/89
4,814,500                       07/091,850                       03/21/89
4,814,502                       07/145,585                       03/21/89
4,814,506                       07/088,331                       03/21/89
4,814,521                       07/089,661                       03/21/89
4,814,525                       07/029,951                       03/21/89
4,814,526                       07/078,665                       03/21/89
4,814,527                       07/068,218                       03/21/89
4,814,537                       07/108,187                       03/21/89
4,814,543                       07/138,749                       03/21/89
4,814,545                       07/245,485                       03/21/89
4,814,554                       07/117,503                       03/21/89
4,814,569                       07/169,848                       03/21/89
4,814,571                       07/220,932                       03/21/89
4,814,584                       07/103,055                       03/21/89
4,814,588                       06/256,539                       03/21/89
4,814,591                       07/175,404                       03/21/89
4,814,592                       06/868,815                       03/21/89
4,814,602                       07/192,591                       03/21/89
4,814,612                       07/031,150                       03/21/89
4,814,615                       07/045,538                       03/21/89
4,814,622                       07/117,754                       03/21/89
4,814,623                       07/041,062                       03/21/89
4,814,638                       07/059,075                       03/21/89
4,814,641                       07/139,639                       03/21/89
4,814,649                       07/134,656                       03/21/89
4,814,666                       07/034,393                       03/21/89
4,814,679                       07/130,651                       03/21/89
4,814,683                       07/077,162                       03/21/89
4,814,689                       06/941,369                       03/21/89
4,814,700                       07/111,962                       03/21/89
4,814,705                       07/016,576                       03/21/89
4,814,707                       07/064,281                       03/21/89
4,814,714                       07/082,712                       03/21/89
4,814,715                       06/605,048                       03/21/89
4,814,716                       07/099,550                       03/21/89
4,814,719                       07/133,102                       03/21/89
4,814,721                       06/916,658                       03/21/89
4,814,728                       07/109,412                       03/21/89
4,814,729                       07/130,904                       03/21/89
4,814,736                       07/151,126                       03/21/89
4,814,740                       07/027,524                       03/21/89
4,814,743                       07/072,048                       03/21/89
4,814,744                       07/126,801                       03/21/89
4,814,745                       07/209,399                       03/21/89
4,814,747                       07/055,288                       03/21/89
4,814,751                       07/212,086                       03/21/89
4,814,755                       07/082,978                       03/21/89
4,814,760                       07/045,732                       03/21/89
4,814,762                       07/125,088                       03/21/89
4,814,777                       07/080,264                       03/21/89
4,814,778                       07/068,669                       03/21/89
4,814,779                       07/030,010                       03/21/89
4,814,784                       06/790,667                       03/21/89
4,814,790                       07/160,131                       03/21/89
4,814,814                       07/201,161                       03/21/89
4,814,838                       07/056,657                       03/21/89
4,814,843                       06/933,343                       03/21/89
4,814,853                       06/428,614                       03/21/89
4,814,855                       06/857,227                       03/21/89
4,814,857                       07/018,633                       03/21/89
4,814,862                       07/140,925                       03/21/89
4,814,866                       07/021,420                       03/21/89
4,814,873                       07/145,144                       03/21/89
4,814,880                       07/195,683                       03/21/89
4,814,885                       07/150,073                       03/21/89
4,814,895                       07/046,855                       03/21/89
4,814,896                       07/022,969                       03/21/89
4,814,899                       07/096,962                       03/21/89
4,814,903                       07/067,762                       03/21/89
4,814,904                       06/853,930                       03/21/89
4,814,906                       07/023,241                       03/21/89
4,814,907                       07/125,000                       03/21/89
4,814,912                       07/073,837                       03/21/89
4,814,913                       07/075,756                       03/21/89
4,814,916                       06/341,576                       03/21/89
4,814,918                       07/055,660                       03/21/89
4,814,919                       07/124,623                       03/21/89
4,814,921                       07/150,504                       03/21/89
4,814,926                       07/101,995                       03/21/89
4,814,929                       07/090,461                       03/21/89
4,814,935                       07/077,935                       03/21/89
4,814,940                       07/055,216                       03/21/89
4,814,946                       07/194,831                       03/21/89
4,814,952                       07/134,927                       03/21/89
4,814,968                       07/109,325                       03/21/89
4,814,970                       06/939,173                       03/21/89
4,814,973                       06/499,474                       03/21/89
4,814,975                       06/638,270                       03/21/89
4,814,985                       07/029,139                       03/21/89
4,814,987                       06/864,256                       03/21/89
4,814,988                       07/051,654                       03/21/89
4,814,996                       06/387,177                       03/21/89
4,814,998                       07/031,559                       03/21/89
4,815,001                       06/868,612                       03/21/89
4,815,005                       07/122,446                       03/21/89
4,815,009                       07/040,920                       03/21/89
4,815,011                       07/103,579                       03/21/89
4,815,047                       06/876,966                       03/21/89
4,815,050                       06/739,513                       03/21/89
4,815,053                       07/146,332                       03/21/89
4,815,058                       06/920,423                       03/21/89
4,815,064                       07/017,510                       03/21/89
4,815,069                       07/171,698                       03/21/89
4,815,071                       07/085,574                       03/21/89
4,815,074                       06/893,168                       03/21/89
4,815,091                       07/192,565                       03/21/89
4,815,103                       07/113,973                       03/21/89
4,815,107                       07/150,342                       03/21/89
4,815,110                       07/023,411                       03/21/89
4,815,126                       06/887,170                       03/21/89
4,815,129                       06/688,503                       03/21/89
4,815,140                       07/152,326                       03/21/89
4,815,141                       06/937,118                       03/21/89

                    PATENTS WHICH EXPIRED ON March 16, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

5,193,226                       07/787,512                       03/16/93
5,193,230                       07/795,721                       03/16/93
5,193,237                       07/647,031                       03/16/93
5,193,239                       07/714,676                       03/16/93
5,193,240                       07/822,997                       03/16/93
5,193,242                       07/720,228                       03/16/93
5,193,249                       07/802,696                       03/16/93
5,193,252                       07/871,136                       03/16/93
5,193,257                       07/549,958                       03/16/93
5,193,261                       07/889,789                       03/16/93
5,193,265                       07/686,693                       03/16/93
5,193,266                       07/770,426                       03/16/93
5,193,277                       07/813,450                       03/16/93
5,193,281                       07/845,278                       03/16/93
5,193,282                       07/741,487                       03/16/93
5,193,287                       07/876,193                       03/16/93
5,193,294                       07/685,315                       03/16/93
5,193,295                       07/741,506                       03/16/93
5,193,300                       07/877,676                       03/16/93
5,193,311                       07/845,002                       03/16/93
5,193,313                       07/811,851                       03/16/93
5,193,315                       07/803,581                       03/16/93
5,193,319                       07/738,107                       03/16/93
5,193,323                       07/695,095                       03/16/93
5,193,326                       07/767,675                       03/16/93
5,193,334                       07/621,056                       03/16/93
5,193,336                       07/762,480                       03/16/93
5,193,339                       07/784,395                       03/16/93
5,193,348                       07/720,203                       03/16/93
5,193,350                       07/690,107                       03/16/93
5,193,356                       07/756,431                       03/16/93
5,193,359                       07/818,138                       03/16/93
5,193,361                       07/815,792                       03/16/93
5,193,365                       07/765,985                       03/16/93
5,193,366                       07/806,235                       03/16/93
5,193,367                       07/892,972                       03/16/93
5,193,368                       07/896,654                       03/16/93
5,193,370                       07/860,096                       03/16/93
5,193,372                       07/687,794                       03/16/93
5,193,380                       07/755,243                       03/16/93
5,193,382                       07/735,784                       03/16/93
5,193,385                       07/685,644                       03/16/93
5,193,389                       07/707,096                       03/16/93
5,193,395                       07/801,141                       03/16/93
5,193,397                       07/764,676                       03/16/93
5,193,398                       07/757,427                       03/16/93
5,193,401                       07/780,742                       03/16/93
5,193,407                       07/802,530                       03/16/93
5,193,419                       07/898,152                       03/16/93
5,193,420                       07/825,566                       03/16/93
5,193,422                       07/786,070                       03/16/93
5,193,431                       07/609,279                       03/16/93
5,193,435                       07/918,792                       03/16/93
5,193,438                       07/824,360                       03/16/93
5,193,441                       07/846,871                       03/16/93
5,193,442                       07/642,036                       03/16/93
5,193,444                       07/686,426                       03/16/93
5,193,445                       07/787,041                       03/16/93
5,193,449                       07/616,545                       03/16/93
5,193,456                       07/803,488                       03/16/93
5,193,457                       07/715,765                       03/16/93
5,193,459                       07/803,335                       03/16/93
5,193,463                       07/866,457                       03/16/93
5,193,464                       07/691,449                       03/16/93
5,193,467                       07/839,812                       03/16/93
5,193,470                       07/790,202                       03/16/93
5,193,474                       07/838,367                       03/16/93
5,193,475                       07/891,027                       03/16/93
5,193,476                       07/758,007                       03/16/93
5,193,479                       07/699,167                       03/16/93
5,193,486                       07/856,293                       03/16/93
5,193,488                       07/793,126                       03/16/93
5,193,490                       07/753,509                       03/16/93
5,193,494                       07/579,743                       03/16/93
5,193,505                       07/838,262                       03/16/93
5,193,506                       07/775,643                       03/16/93
5,193,509                       07/848,084                       03/16/93
5,193,510                       07/895,056                       03/16/93
5,193,515                       07/851,001                       03/16/93
5,193,522                       07/860,285                       03/16/93
5,193,523                       07/719,411                       03/16/93
5,193,524                       07/787,377                       03/16/93
5,193,529                       07/562,573                       03/16/93
5,193,542                       07/856,999                       03/16/93
5,193,543                       07/865,774                       03/16/93
5,193,544                       07/650,824                       03/16/93
5,193,551                       07/560,851                       03/16/93
5,193,556                       07/733,107                       03/16/93
5,193,569                       07/860,441                       03/16/93
5,193,581                       07/853,072                       03/16/93
5,193,589                       07/818,814                       03/16/93
5,193,593                       07/841,860                       03/16/93
5,193,594                       07/864,055                       03/16/93
5,193,604                       07/659,302                       03/16/93
5,193,605                       07/787,807                       03/16/93
5,193,613                       07/906,553                       03/16/93
5,193,621                       07/693,759                       03/16/93
5,193,627                       07/664,325                       03/16/93
5,193,641                       07/753,337                       03/16/93
5,193,642                       07/863,959                       03/16/93
5,193,643                       07/735,416                       03/16/93
5,193,644                       07/684,104                       03/16/93
5,193,648                       07/705,126                       03/16/93
5,193,651                       07/757,210                       03/16/93
5,193,662                       07/861,086                       03/16/93
5,193,681                       07/840,561                       03/16/93
5,193,683                       07/784,647                       03/16/93
5,193,685                       07/718,014                       03/16/93
5,193,691                       07/750,162                       03/16/93
5,193,692                       07/867,365                       03/16/93
5,193,694                       07/812,162                       03/16/93
5,193,697                       07/735,804                       03/16/93
5,193,700                       07/759,540                       03/16/93
5,193,708                       07/820,538                       03/16/93
5,193,712                       07/838,060                       03/16/93
5,193,714                       07/903,743                       03/16/93
5,193,723                       07/784,161                       03/16/93
5,193,732                       07/771,706                       03/16/93
5,193,736                       07/662,743                       03/16/93
5,193,737                       07/420,450                       03/16/93
5,193,749                       07/737,647                       03/16/93
5,193,753                       07/815,350                       03/16/93
5,193,767                       07/748,591                       03/16/93
5,193,770                       07/857,115                       03/16/93
5,193,771                       07/750,654                       03/16/93
5,193,777                       07/886,423                       03/16/93
5,193,781                       07/875,971                       03/16/93
5,193,783                       07/725,468                       03/16/93
5,193,788                       07/845,728                       03/16/93
5,193,792                       07/836,216                       03/16/93
5,193,801                       07/779,557                       03/16/93
5,193,804                       07/594,277                       03/16/93
5,193,806                       07/878,534                       03/16/93
5,193,813                       07/698,488                       03/16/93
5,193,816                       07/861,469                       03/16/93
5,193,819                       07/828,119                       03/16/93
5,193,821                       07/539,916                       03/16/93
5,193,822                       07/690,707                       03/16/93
5,193,823                       07/893,902                       03/16/93
5,193,825                       07/770,355                       03/16/93
5,193,827                       07/868,457                       03/16/93
5,193,831                       07/779,350                       03/16/93
5,193,832                       07/762,576                       03/16/93
5,193,839                       07/751,643                       03/16/93
5,193,841                       07/556,845                       03/16/93
5,193,848                       07/764,907                       03/16/93
5,193,853                       07/864,202                       03/16/93
5,193,858                       07/740,233                       03/16/93
5,193,873                       07/879,446                       03/16/93
5,193,881                       07/780,361                       03/16/93
5,193,883                       07/688,501                       03/16/93
5,193,890                       07/869,076                       03/16/93
5,193,891                       07/662,211                       03/16/93
5,193,896                       07/820,192                       03/16/93
5,193,902                       07/879,778                       03/16/93
5,193,903                       07/943,717                       03/16/93
5,193,904                       07/943,728                       03/16/93
5,193,905                       07/806,622                       03/16/93
5,193,909                       07/881,980                       03/16/93
5,193,922                       07/688,010                       03/16/93
5,193,927                       07/494,095                       03/16/93
5,193,929                       07/892,072                       03/16/93
5,193,932                       07/886,412                       03/16/93
5,193,933                       07/828,724                       03/16/93
5,193,936                       07/721,935                       03/16/93
5,193,942                       07/642,270                       03/16/93
5,193,954                       07/784,845                       03/16/93
5,193,959                       07/765,741                       03/16/93
5,193,963                       07/608,658                       03/16/93
5,193,970                       07/667,546                       03/16/93
5,193,973                       07/770,779                       03/16/93
5,193,978                       07/764,166                       03/16/93
5,193,988                       07/628,431                       03/16/93
5,193,994                       07/650,917                       03/16/93
5,193,999                       07/791,726                       03/16/93
5,194,001                       07/738,963                       03/16/93
5,194,002                       07/561,311                       03/16/93
5,194,008                       07/858,196                       03/16/93
5,194,015                       07/570,466                       03/16/93
5,194,018                       07/823,904                       03/16/93
5,194,029                       07/906,848                       03/16/93
5,194,032                       07/695,467                       03/16/93
5,194,038                       07/905,769                       03/16/93
5,194,039                       07/732,735                       03/16/93
5,194,050                       07/782,126                       03/16/93
5,194,061                       07/851,625                       03/16/93
5,194,064                       07/920,253                       03/16/93
5,194,068                       07/720,066                       03/16/93
5,194,069                       07/576,486                       03/16/93
5,194,081                       07/758,250                       03/16/93
5,194,084                       07/915,037                       03/16/93
5,194,094                       07/713,807                       03/16/93
5,194,103                       07/695,144                       03/16/93
5,194,107                       07/680,014                       03/16/93
5,194,112                       07/915,566                       03/16/93
5,194,121                       07/689,946                       03/16/93
5,194,124                       07/798,608                       03/16/93
5,194,126                       07/778,800                       03/16/93
5,194,130                       07/631,551                       03/16/93
5,194,143                       07/793,754                       03/16/93
5,194,147                       07/741,084                       03/16/93
5,194,148                       07/691,800                       03/16/93
5,194,150                       07/739,282                       03/16/93
5,194,165                       07/653,366                       03/16/93
5,194,167                       07/697,039                       03/16/93
5,194,171                       07/639,620                       03/16/93
5,194,179                       07/316,195                       03/16/93
5,194,182                       07/660,784                       03/16/93
5,194,183                       07/399,634                       03/16/93
5,194,186                       07/807,253                       03/16/93
5,194,188                       07/656,141                       03/16/93
5,194,196                       07/418,435                       03/16/93
5,194,198                       07/699,871                       03/16/93
5,194,202                       07/757,932                       03/16/93
5,194,206                       07/415,588                       03/16/93
5,194,209                       07/858,385                       03/16/93
5,194,218                       07/241,234                       03/16/93
5,194,221                       07/817,751                       03/16/93
5,194,222                       07/810,882                       03/16/93
5,194,223                       07/794,532                       03/16/93
5,194,225                       07/238,087                       03/16/93
5,194,231                       07/689,853                       03/16/93
5,194,236                       07/730,410                       03/16/93
5,194,237                       07/686,936                       03/16/93
5,194,238                       07/865,725                       03/16/93
5,194,239                       07/793,100                       03/16/93
5,194,246                       07/686,106                       03/16/93
5,194,252                       07/819,369                       03/16/93
5,194,261                       07/879,533                       03/16/93
5,194,263                       07/749,695                       03/16/93
5,194,264                       07/492,791                       03/16/93
5,194,268                       07/790,932                       03/16/93
5,194,273                       07/665,207                       03/16/93
5,194,279                       07/718,499                       03/16/93
5,194,280                       07/793,159                       03/16/93
5,194,287                       07/833,016                       03/16/93
5,194,290                       07/858,176                       03/16/93
5,194,291                       07/689,295                       03/16/93
5,194,292                       07/806,360                       03/16/93
5,194,308                       07/910,516                       03/16/93
5,194,311                       07/845,005                       03/16/93
5,194,328                       07/774,145                       03/16/93
5,194,332                       07/614,465                       03/16/93
5,194,339                       07/708,763                       03/16/93
5,194,340                       07/771,401                       03/16/93
5,194,343                       07/594,485                       03/16/93
5,194,347                       07/798,003                       03/16/93
5,194,358                       07/737,288                       03/16/93
5,194,360                       07/675,275                       03/16/93
5,194,376                       07/316,768                       03/16/93
5,194,388                       07/377,278                       03/16/93
5,194,391                       07/720,983                       03/16/93
5,194,396                       07/763,171                       03/16/93
5,194,397                       07/710,498                       03/16/93
5,194,415                       07/805,675                       03/16/93
5,194,421                       07/794,694                       03/16/93
5,194,424                       07/887,121                       03/16/93
5,194,426                       07/681,310                       03/16/93
5,194,428                       07/516,275                       03/16/93
5,194,432                       07/553,371                       03/16/93
5,194,442                       07/606,132                       03/16/93
5,194,452                       07/888,061                       03/16/93
5,194,465                       07/769,916                       03/16/93
5,194,467                       07/816,918                       03/16/93
5,194,483                       07/794,972                       03/16/93
5,194,491                       07/527,947                       03/16/93
5,194,497                       07/670,045                       03/16/93
5,194,502                       07/794,886                       03/16/93
5,194,506                       07/630,920                       03/16/93
5,194,509                       07/605,134                       03/16/93
5,194,511                       07/828,575                       03/16/93
5,194,515                       07/483,830                       03/16/93
5,194,519                       07/802,928                       03/16/93
5,194,526                       07/921,944                       03/16/93
5,194,532                       07/898,046                       03/16/93
5,194,534                       07/764,657                       03/16/93
5,194,541                       07/675,927                       03/16/93
5,194,545                       07/788,464                       03/16/93
5,194,547                       07/711,780                       03/16/93
5,194,549                       07/725,321                       03/16/93
5,194,550                       07/864,783                       03/16/93
5,194,552                       07/859,157                       03/16/93
5,194,555                       07/664,871                       03/16/93
5,194,557                       07/644,761                       03/16/93
5,194,558                       07/767,441                       03/16/93
5,194,563                       07/679,104                       03/16/93
5,194,565                       07/735,488                       03/16/93
5,194,567                       07/681,741                       03/16/93
5,194,572                       07/924,305                       03/16/93
5,194,574                       07/787,360                       03/16/93
5,194,575                       07/689,418                       03/16/93
5,194,582                       07/933,140                       03/16/93
5,194,587                       07/723,668                       03/16/93
5,194,593                       07/592,685                       03/16/93
5,194,606                       07/734,490                       03/16/93
5,194,607                       07/722,108                       03/16/93
5,194,608                       07/719,492                       03/16/93
5,194,609                       07/918,185                       03/16/93
5,194,611                       07/683,772                       03/16/93
5,194,612                       07/859,641                       03/16/93
5,194,624                       07/520,814                       03/16/93
5,194,625                       07/450,089                       03/16/93
5,194,627                       07/882,899                       03/16/93
5,194,637                       07/748,672                       03/16/93
5,194,647                       07/889,698                       03/16/93
5,194,648                       07/562,321                       03/16/93
5,194,649                       07/825,906                       03/16/93
5,194,651                       07/827,586                       03/16/93
5,194,652                       07/891,378                       03/16/93
5,194,655                       07/699,376                       03/16/93
5,194,656                       07/867,329                       03/16/93
5,194,659                       07/901,618                       03/16/93
5,194,661                       07/569,686                       03/16/93
5,194,669                       07/759,385                       03/16/93
5,194,676                       07/674,745                       03/16/93
5,194,682                       07/797,542                       03/16/93
5,194,687                       07/846,020                       03/16/93
5,194,690                       07/482,498                       03/16/93
5,194,691                       07/612,586                       03/16/93
5,194,693                       07/779,776                       03/16/93
5,194,701                       07/757,765                       03/16/93
5,194,716                       07/767,710                       03/16/93
5,194,718                       07/559,387                       03/16/93
5,194,721                       07/512,185                       03/16/93
5,194,730                       07/887,160                       03/16/93
5,194,748                       07/720,522                       03/16/93
5,194,755                       07/665,199                       03/16/93
5,194,756                       07/902,408                       03/16/93
5,194,758                       07/522,643                       03/16/93
5,194,782                       07/732,915                       03/16/93
5,194,791                       07/554,568                       03/16/93
5,194,792                       07/613,713                       03/16/93
5,194,794                       07/819,292                       03/16/93
5,194,795                       07/635,610                       03/16/93
5,194,797                       07/712,832                       03/16/93
5,194,799                       07/667,478                       03/16/93
5,194,803                       07/594,273                       03/16/93
5,194,809                       07/574,766                       03/16/93
5,194,811                       07/561,898                       03/16/93
5,194,812                       07/762,603                       03/16/93
5,194,816                       07/600,464                       03/16/93
5,194,817                       07/732,072                       03/16/93
5,194,823                       07/802,047                       03/16/93
5,194,829                       07/755,386                       03/16/93
5,194,832                       07/745,712                       03/16/93
5,194,838                       07/797,851                       03/16/93
5,194,839                       07/886,244                       03/16/93
5,194,843                       07/719,850                       03/16/93
5,194,852                       07/368,241                       03/16/93
5,194,856                       07/711,904                       03/16/93
5,194,860                       07/613,319                       03/16/93
5,194,875                       07/711,846                       03/16/93
5,194,882                       07/709,544                       03/16/93
5,194,885                       07/716,141                       03/16/93
5,194,898                       07/844,290                       03/16/93
5,194,905                       07/619,649                       03/16/93
5,194,907                       07/735,909                       03/16/93
5,194,913                       07/672,335                       03/16/93
5,194,922                       07/676,311                       03/16/93
5,194,925                       07/657,766                       03/16/93
5,194,926                       07/770,219                       03/16/93
5,194,943                       07/788,236                       03/16/93
5,194,966                       07/616,134                       03/16/93
5,194,973                       07/799,275                       03/16/93
5,194,987                       07/753,528                       03/16/93
5,194,992                       07/578,871                       03/16/93
5,194,995                       07/639,017                       03/16/93
5,194,996                       07/510,288                       03/16/93
5,195,000                       07/579,062                       03/16/93
5,195,005                       07/890,372                       03/16/93
5,195,007                       07/706,966                       03/16/93
5,195,011                       07/609,846                       03/16/93
5,195,019                       07/832,881                       03/16/93
5,195,032                       07/643,699                       03/16/93
5,195,034                       07/779,693                       03/16/93
5,195,044                       07/639,965                       03/16/93
5,195,048                       07/662,138                       03/16/93
5,195,052                       07/807,305                       03/16/93
5,195,054                       07/618,631                       03/16/93
5,195,055                       07/833,562                       03/16/93
5,195,064                       07/776,736                       03/16/93
5,195,072                       07/327,820                       03/16/93
5,195,075                       07/693,866                       03/16/93
5,195,094                       07/586,299                       03/16/93
5,195,117                       07/874,274                       03/16/93
5,195,120                       07/811,649                       03/16/93
5,195,124                       07/781,857                       03/16/93
5,195,141                       07/715,647                       03/16/93
5,195,147                       07/516,924                       03/16/93
5,195,153                       07/809,671                       03/16/93
5,195,158                       07/649,612                       03/16/93
5,195,159                       07/805,327                       03/16/93
5,195,164                       07/525,194                       03/16/93
5,195,167                       07/871,600                       03/16/93
5,195,171                       07/767,565                       03/16/93
5,195,173                       07/833,623                       03/16/93

                    PATENTS WHICH EXPIRED ON March 18, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                            Serial                            Issue
Number                            Number                             Date

5,611,079                       08/429,994                       03/18/97
5,611,082                       08/671,631                       03/18/97
5,611,086                       08/643,329                       03/18/97
5,611,088                       07/843,027                       03/18/97
5,611,089                       08/507,760                       03/18/97
5,611,090                       08/500,702                       03/18/97
5,611,092                       08/517,370                       03/18/97
5,611,094                       08/519,004                       03/18/97
5,611,100                       08/622,107                       03/18/97
5,611,101                       08/550,374                       03/18/97
5,611,104                       08/652,983                       03/18/97
5,611,109                       08/603,431                       03/18/97
5,611,114                       08/461,533                       03/18/97
5,611,121                       08/650,601                       03/18/97
5,611,127                       08/589,199                       03/18/97
5,611,130                       08/084,353                       03/18/97
5,611,132                       08/645,032                       03/18/97
5,611,134                       08/664,930                       03/18/97
5,611,136                       08/447,102                       03/18/97
5,611,138                       08/424,899                       03/18/97
5,611,142                       08/467,185                       03/18/97
5,611,156                       08/426,574                       03/18/97
5,611,167                       08/317,357                       03/18/97
5,611,183                       08/473,440                       03/18/97
5,611,191                       08/387,559                       03/18/97
5,611,193                       08/381,532                       03/18/97
5,611,195                       08/467,042                       03/18/97
5,611,208                       08/545,578                       03/18/97
5,611,211                       08/301,763                       03/18/97
5,611,212                       08/585,155                       03/18/97
5,611,222                       08/433,439                       03/18/97
5,611,229                       08/387,456                       03/18/97
5,611,233                       08/351,431                       03/18/97
5,611,236                       08/509,019                       03/18/97
5,611,240                       08/328,571                       03/18/97
5,611,241                       08/315,966                       03/18/97
5,611,243                       08/239,959                       03/18/97
5,611,246                       08/415,867                       03/18/97
5,611,247                       08/522,373                       03/18/97
5,611,249                       08/568,366                       03/18/97
5,611,251                       08/432,282                       03/18/97
5,611,254                       08/347,690                       03/18/97
5,611,260                       08/679,804                       03/18/97
5,611,269                       08/390,979                       03/18/97
5,611,278                       08/540,902                       03/18/97
5,611,290                       08/597,243                       03/18/97
5,611,296                       08/441,532                       03/18/97
5,611,298                       08/497,081                       03/18/97
5,611,305                       08/625,868                       03/18/97
5,611,314                       08/548,116                       03/18/97
5,611,324                       08/535,948                       03/18/97
5,611,326                       08/493,828                       03/18/97
5,611,335                       08/471,246                       03/18/97
5,611,345                       08/427,741                       03/18/97
5,611,347                       08/467,629                       03/18/97
5,611,352                       08/528,249                       03/18/97
5,611,357                       08/385,794                       03/18/97
5,611,358                       08/525,843                       03/18/97
5,611,369                       08/380,494                       03/18/97
5,611,376                       08/442,093                       03/18/97
5,611,380                       08/565,218                       03/18/97
5,611,393                       08/609,770                       03/18/97
5,611,397                       08/447,122                       03/18/97
5,611,408                       08/418,477                       03/18/97
5,611,409                       08/437,665                       03/18/97
5,611,414                       08/421,784                       03/18/97
5,611,422                       08/397,432                       03/18/97
5,611,427                       08/589,412                       03/18/97
5,611,430                       08/440,663                       03/18/97
5,611,436                       08/501,773                       03/18/97
5,611,439                       08/628,854                       03/18/97
5,611,440                       08/441,834                       03/18/97
5,611,441                       08/292,279                       03/18/97
5,611,447                       08/358,960                       03/18/97
5,611,454                       08/328,082                       03/18/97
5,611,464                       08/449,476                       03/18/97
5,611,465                       08/407,362                       03/18/97
5,611,466                       08/540,480                       03/18/97
5,611,473                       08/417,634                       03/18/97
5,611,475                       07/658,691                       03/18/97
5,611,482                       08/247,578                       03/18/97
5,611,487                       08/379,257                       03/18/97
5,611,501                       08/410,110                       03/18/97
5,611,502                       08/548,400                       03/18/97
5,611,507                       08/441,364                       03/18/97
5,611,511                       08/572,853                       03/18/97
5,611,518                       08/490,711                       03/18/97
5,611,519                       08/467,957                       03/18/97
5,611,534                       08/307,784                       03/18/97
5,611,542                       08/703,443                       03/18/97
5,611,546                       08/444,078                       03/18/97
5,611,552                       08/526,409                       03/18/97
5,611,553                       08/440,487                       03/18/97
5,611,558                       08/503,310                       03/18/97
5,611,561                       08/501,612                       03/18/97
5,611,564                       08/109,122                       03/18/97
5,611,566                       08/373,471                       03/18/97
5,611,571                       08/501,083                       03/18/97
5,611,572                       08/307,694                       03/18/97
5,611,578                       08/588,264                       03/18/97
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