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 August 2, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent Number                  Serial Number                  Issue Date

4,760,623                       06/921,531                      08/02/88
4,760,624                       06/911,351                      08/02/88
4,760,625                       06/940,956                      08/02/88
4,760,627                       07/028,866                      08/02/88
4,760,631                       06/892,359                      08/02/88
4,760,635                       06/914,981                      08/02/88
4,760,646                       07/001,959                      08/02/88
4,760,657                       06/890,407                      08/02/88
4,760,670                       07/005,812                      08/02/88
4,760,675                       06/945,821                      08/02/88
4,760,681                       06/896,593                      08/02/88
4,760,682                       07/046,081                      08/02/88
4,760,684                       07/003,849                      08/02/88
4,760,687                       07/056,227                      08/02/88
4,760,699                       06/594,814                      08/02/88
4,760,702                       07/013,556                      08/02/88
4,760,724                       06/836,977                      08/02/88
4,760,729                       07/140,878                      08/02/88
4,760,731                       07/057,489                      08/02/88
4,760,732                       07/067,836                      08/02/88
4,760,750                       06/288,783                      08/02/88
4,760,752                       07/033,318                      08/02/88
4,760,755                       06/844,658                      08/02/88
4,760,767                       06/895,640                      08/02/88
4,760,770                       06/544,865                      08/02/88
4,760,777                       06/811,889                      08/02/88
4,760,779                       07/088,025                      08/02/88
4,760,781                       06/942,686                      08/02/88
4,760,788                       06/914,157                      08/02/88
4,760,816                       06/855,478                      08/02/88
4,760,820                       06/946,145                      08/02/88
4,760,821                       07/003,382                      08/02/88
4,760,825                       06/914,734                      08/02/88
4,760,826                       07/059,748                      08/02/88
4,760,832                       06/918,312                      08/02/88
4,760,833                       06/903,814                      08/02/88
4,760,837                       07/016,251                      08/02/88
4,760,846                       07/029,218                      08/02/88
4,760,856                       06/919,562                      08/02/88
4,760,872                       07/031,565                      08/02/88
4,760,873                       06/913,345                      08/02/88
4,760,890                       07/050,443                      08/02/88
4,760,891                       07/009,799                      08/02/88
4,760,897                       07/073,922                      08/02/88
4,760,903                       07/053,885                      08/02/88
4,760,915                       06/927,006                      08/02/88
4,760,919                       07/079,648                      08/02/88
4,760,921                       06/925,651                      08/02/88
4,760,958                       07/006,966                      08/02/88
4,760,959                       06/894,332                      08/02/88
4,760,969                       07/109,576                      08/02/88
4,760,979                       07/029,279                      08/02/88
4,760,986                       07/072,408                      08/02/88
4,760,991                       07/073,365                      08/02/88
4,760,993                       07/005,368                      08/02/88
4,760,998                       07/064,982                      08/02/88
4,761,003                       07/079,402                      08/02/88
4,761,018                       07/016,133                      08/02/88
4,761,019                       07/093,444                      08/02/88
4,761,022                       07/017,747                      08/02/88
4,761,026                       07/098,383                      08/02/88
4,761,071                       06/669,188                      08/02/88
4,761,077                       07/103,541                      08/02/88
4,761,091                       07/042,654                      08/02/88
4,761,096                       07/017,967                      08/02/88
4,761,099                       07/031,488                      08/02/88
4,761,101                       06/948,321                      08/02/88
4,761,125                       07/030,058                      08/02/88
4,761,126                       07/006,243                      08/02/88
4,761,129                       07/080,556                      08/02/88
4,761,132                       07/021,719                      08/02/88
4,761,145                       07/034,139                      08/02/88
4,761,149                       06/840,287                      08/02/88
4,761,162                       06/916,866                      08/02/88
4,761,171                       07/012,276                      08/02/88
4,761,174                       07/104,598                      08/02/88
4,761,192                       07/098,769                      08/02/88
4,761,198                       07/072,944                      08/02/88
4,761,201                       06/869,381                      08/02/88
4,761,202                       07/024,239                      08/02/88
4,761,210                       06/874,427                      08/02/88
4,761,214                       07/029,019                      08/02/88
4,761,223                       06/646,340                      08/02/88
4,761,240                       07/113,705                      08/02/88
4,761,241                       06/894,660                      08/02/88
4,761,247                       07/022,456                      08/02/88
4,761,248                       06/927,545                      08/02/88
4,761,252                       07/090,229                      08/02/88
4,761,254                       06/851,186                      08/02/88
4,761,262                       06/928,220                      08/02/88
4,761,263                       06/865,996                      08/02/88
4,761,265                       07/096,801                      08/02/88
4,761,266                       07/064,431                      08/02/88
4,761,270                       07/014,821                      08/02/88
4,761,277                       06/946,991                      08/02/88
4,761,286                       07/008,081                      08/02/88
4,761,296                       06/815,524                      08/02/88
4,761,299                       07/033,028                      08/02/88
4,761,300                       06/834,135                      08/02/88
4,761,313                       06/944,847                      08/02/88
4,761,315                       06/896,840                      08/02/88
4,761,317                       07/084,223                      08/02/88
4,761,332                       06/937,265                      08/02/88
4,761,337                       07/034,140                      08/02/88
4,761,338                       07/096,305                      08/02/88
4,761,348                       07/026,819                      08/02/88
4,761,353                       07/045,679                      08/02/88
4,761,355                       06/321,460                      08/02/88
4,761,357                       07/029,882                      08/02/88
4,761,368                       06/885,967                      08/02/88
4,761,370                       06/874,638                      08/02/88
4,761,374                       06/871,315                      08/02/88
4,761,378                       06/472,416                      08/02/88
4,761,379                       06/639,279                      08/02/88
4,761,383                       07/047,606                      08/02/88
4,761,388                       06/903,142                      08/02/88
4,761,391                       06/880,313                      08/02/88
4,761,402                       07/013,082                      08/02/88
4,761,405                       07/021,703                      08/02/88
4,761,407                       06/789,365                      08/02/88
4,761,411                       06/495,569                      08/02/88
4,761,412                       06/929,700                      08/02/88
4,761,419                       07/129,516                      08/02/88
4,761,423                       06/796,618                      08/02/88
4,761,457                       07/020,209                      08/02/88
4,761,459                       07/057,039                      08/02/88
4,761,491                       06/920,633                      08/02/88
4,761,505                       06/888,581                      08/02/88
4,761,510                       07/045,580                      08/02/88
4,761,522                       06/915,513                      08/02/88
4,761,544                       06/798,765                      08/02/88
4,761,549                       06/934,287                      08/02/88
4,761,552                       06/907,890                      08/02/88
4,761,557                       06/897,617                      08/02/88
4,761,566                       07/012,670                      08/02/88
4,761,572                       07/025,709                      08/02/88
4,761,574                       07/105,447                      08/02/88
4,761,575                       06/909,886                      08/02/88
4,761,577                       07/069,321                      08/02/88
4,761,578                       07/019,818                      08/02/88
4,761,579                       07/049,174                      08/02/88
4,761,581                       07/046,196                      08/02/88
4,761,588                       06/938,533                      08/02/88
4,761,591                       07/027,492                      08/02/88
4,761,594                       06/840,377                      08/02/88
4,761,607                       07/097,358                      08/02/88
4,761,611                       06/854,773                      08/02/88
4,761,614                       07/042,882                      08/02/88
4,761,628                       07/133,927                      08/02/88
4,761,630                       07/107,225                      08/02/88
4,761,631                       07/049,821                      08/02/88
4,761,634                       06/940,058                      08/02/88
4,761,635                       06/932,371                      08/02/88
4,761,638                       06/907,063                      08/02/88
4,761,643                       06/838,448                      08/02/88
4,761,652                       06/924,546                      08/02/88
4,761,663                       07/020,410                      08/02/88
4,761,664                       07/020,424                      08/02/88
4,761,667                       06/933,312                      08/02/88
4,761,675                       07/090,991                      08/02/88
4,761,677                       07/008,139                      08/02/88
4,761,686                       06/928,948                      08/02/88
4,761,692                       07/038,358                      08/02/88
4,761,693                       07/016,619                      08/02/88
4,761,695                       06/908,633                      08/02/88
4,761,706                       06/874,084                      08/02/88
4,761,730                       06/751,179                      08/02/88
4,761,748                       06/775,567                      08/02/88
4,761,752                       06/854,260                      08/02/88
4,761,755                       06/629,640                      08/02/88
4,761,759                       06/840,998                      08/02/88
4,761,770                       07/092,370                      08/02/88
4,761,772                       06/666,610                      08/02/88
4,761,773                       06/840,928                      08/02/88
4,761,775                       07/008,118                      08/02/88
4,761,789                       06/891,320                      08/02/88
4,761,793                       07/047,811                      08/02/88
4,761,801                       06/875,894                      08/02/88
4,761,803                       07/052,271                      08/02/88
4,761,810                       06/921,599                      08/02/88
4,761,811                       06/944,827                      08/02/88
4,761,812                       06/807,085                      08/02/88
4,761,814                       06/876,601                      08/02/88
4,761,816                       06/940,943                      08/02/88
4,761,819                       07/019,567                      08/02/88
4,761,820                       07/095,395                      08/02/88
4,761,828                       06/807,342                      08/02/88
4,761,831                       06/919,964                      08/02/88

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

5,133,084                       07/796,783                      07/28/92
5,133,086                       07/740,107                      07/28/92
5,133,091                       07/667,022                      07/28/92
5,133,092                       07/652,024                      07/28/92
5,133,095                       07/754,024                      07/28/92
5,133,100                       07/684,326                      07/28/92
5,133,102                       07/751,583                      07/28/92
5,133,103                       07/601,891                      07/28/92
5,133,106                       07/589,417                      07/28/92
5,133,112                       07/691,521                      07/28/92
5,133,115                       07/768,236                      07/28/92
5,133,124                       07/596,855                      07/28/92
5,133,128                       07/651,374                      07/28/92
5,133,131                       07/740,160                      07/28/92
5,133,138                       07/719,163                      07/28/92
5,133,140                       07/603,883                      07/28/92
5,133,142                       07/687,189                      07/28/92
5,133,145                       07/679,178                      07/28/92
5,133,150                       07/655,592                      07/28/92
5,133,153                       07/681,067                      07/28/92
5,133,155                       07/515,465                      07/28/92
5,133,161                       07/478,419                      07/28/92
5,133,172                       07/357,388                      07/28/92
5,133,175                       07/694,091                      07/28/92
5,133,178                       07/501,790                      07/28/92
5,133,191                       07/647,256                      07/28/92
5,133,196                       07/719,131                      07/28/92
5,133,199                       07/743,969                      07/28/92
5,133,206                       07/688,156                      07/28/92
5,133,210                       07/475,453                      07/28/92
5,133,213                       07/603,014                      07/28/92
5,133,216                       07/614,099                      07/28/92
5,133,223                       07/606,492                      07/28/92
5,133,228                       07/671,410                      07/28/92
5,133,234                       07/686,523                      07/28/92
5,133,235                       07/637,792                      07/28/92
5,133,238                       07/561,524                      07/28/92
5,133,242                       07/172,114                      07/28/92
5,133,258                       07/662,153                      07/28/92
5,133,264                       07/643,714                      07/28/92
5,133,280                       07/596,565                      07/28/92
5,133,282                       07/582,293                      07/28/92
5,133,285                       07/643,622                      07/28/92
5,133,296                       07/841,713                      07/28/92
5,133,305                       07/645,791                      07/28/92
5,133,312                       07/745,747                      07/28/92
5,133,313                       07/675,615                      07/28/92
5,133,314                       07/811,672                      07/28/92
5,133,316                       07/702,429                      07/28/92
5,133,317                       07/712,562                      07/28/92
5,133,325                       07/460,919                      07/28/92
5,133,327                       07/677,426                      07/28/92
5,133,332                       07/758,705                      07/28/92
5,133,334                       07/815,725                      07/28/92
5,133,341                       07/662,879                      07/28/92
5,133,342                       07/633,951                      07/28/92
5,133,357                       07/651,872                      07/28/92
5,133,358                       07/578,712                      07/28/92
5,133,359                       07/652,740                      07/28/92
5,133,360                       07/665,543                      07/28/92
5,133,362                       07/635,774                      07/28/92
5,133,368                       07/131,348                      07/28/92
5,133,369                       07/806,359                      07/28/92
5,133,370                       07/391,651                      07/28/92
5,133,373                       07/751,566                      07/28/92
5,133,379                       07/710,539                      07/28/92
5,133,380                       07/710,583                      07/28/92
5,133,381                       07/605,201                      07/28/92
5,133,386                       07/560,211                      07/28/92
5,133,388                       07/573,196                      07/28/92
5,133,389                       07/689,843                      07/28/92
5,133,390                       07/616,328                      07/28/92
5,133,395                       07/696,801                      07/28/92
5,133,409                       07/626,360                      07/28/92
5,133,425                       07/619,465                      07/28/92
5,133,426                       07/613,903                      07/28/92
5,133,432                       07/604,204                      07/28/92
5,133,433                       07/631,486                      07/28/92
5,133,434                       07/536,771                      07/28/92
5,133,436                       07/733,581                      07/28/92
5,133,443                       07/669,794                      07/28/92
5,133,447                       07/545,409                      07/28/92
5,133,449                       07/620,069                      07/28/92
5,133,454                       07/624,700                      07/28/92
5,133,456                       07/656,535                      07/28/92
5,133,459                       07/759,123                      07/28/92
5,133,468                       07/715,345                      07/28/92
5,133,472                       07/606,213                      07/28/92
5,133,475                       07/654,523                      07/28/92
5,133,476                       07/716,237                      07/28/92
5,133,477                       07/459,175                      07/28/92
5,133,478                       07/550,910                      07/28/92
5,133,484                       07/669,085                      07/28/92
5,133,491                       07/630,873                      07/28/92
5,133,494                       07/803,709                      07/28/92
5,133,496                       07/753,641                      07/28/92
5,133,497                       07/699,511                      07/28/92
5,133,510                       07/523,119                      07/28/92
5,133,512                       07/550,052                      07/28/92
5,133,515                       07/643,359                      07/28/92
5,133,517                       07/285,749                      07/28/92
5,133,519                       07/341,565                      07/28/92
5,133,524                       07/654,076                      07/28/92
5,133,534                       07/659,291                      07/28/92
5,133,548                       07/625,810                      07/28/92
5,133,549                       07/660,781                      07/28/92
5,133,550                       07/735,406                      07/28/92
5,133,551                       07/825,213                      07/28/92
5,133,553                       07/655,111                      07/28/92
5,133,554                       07/770,169                      07/28/92
5,133,557                       07/745,933                      07/28/92
5,133,560                       07/576,660                      07/28/92
5,133,562                       07/607,626                      07/28/92
5,133,563                       07/639,744                      07/28/92
5,133,564                       07/540,205                      07/28/92
5,133,565                       07/656,300                      07/28/92
5,133,566                       07/804,128                      07/28/92
5,133,568                       07/762,622                      07/28/92
5,133,571                       07/617,132                      07/28/92
5,133,572                       07/624,063                      07/28/92
5,133,574                       07/436,030                      07/28/92
5,133,575                       07/619,000                      07/28/92
5,133,576                       07/661,821                      07/28/92
5,133,577                       07/553,071                      07/28/92
5,133,584                       07/696,020                      07/28/92
5,133,585                       07/587,811                      07/28/92
5,133,588                       07/717,786                      07/28/92
5,133,589                       07/492,654                      07/28/92
5,133,591                       07/707,690                      07/28/92
5,133,618                       07/640,327                      07/28/92
5,133,619                       07/671,100                      07/28/92
5,133,620                       07/602,651                      07/28/92
5,133,625                       07/483,469                      07/28/92
5,133,632                       07/610,049                      07/28/92
5,133,637                       07/673,374                      07/28/92
5,133,642                       07/571,541                      07/28/92
5,133,654                       07/664,808                      07/28/92
5,133,655                       07/637,814                      07/28/92
5,133,656                       07/656,313                      07/28/92
5,133,662                       07/753,978                      07/28/92
5,133,663                       07/824,959                      07/28/92
5,133,665                       07/549,088                      07/28/92
5,133,671                       07/701,692                      07/28/92
5,133,682                       07/608,421                      07/28/92
5,133,684                       07/529,950                      07/28/92
5,133,690                       07/526,012                      07/28/92
5,133,691                       07/647,841                      07/28/92
5,133,694                       07/701,081                      07/28/92
5,133,699                       07/711,172                      07/28/92
5,133,701                       07/596,746                      07/28/92
5,133,706                       07/347,726                      07/28/92
5,133,709                       07/484,181                      07/28/92
5,133,712                       07/578,693                      07/28/92
5,133,720                       07/719,178                      07/28/92
5,133,732                       07/327,286                      07/28/92
5,133,738                       07/570,345                      07/28/92
5,133,744                       07/461,055                      07/28/92
5,133,747                       07/767,038                      07/28/92
5,133,748                       07/657,152                      07/28/92
5,133,754                       07/672,727                      07/28/92
5,133,760                       07/478,466                      07/28/92
5,133,761                       07/713,892                      07/28/92
5,133,762                       07/691,143                      07/28/92
5,133,763                       07/449,953                      07/28/92
5,133,775                       07/693,951                      07/28/92
5,133,778                       07/666,134                      07/28/92
5,133,779                       07/771,087                      07/28/92
5,133,780                       07/565,039                      07/28/92
5,133,781                       07/631,532                      07/28/92
5,133,799                       07/697,036                      07/28/92
5,133,802                       07/514,962                      07/28/92
5,133,804                       07/556,058                      07/28/92
5,133,807                       07/686,496                      07/28/92
5,133,809                       07/593,838                      07/28/92
5,133,829                       07/751,373                      07/28/92
5,133,833                       07/661,800                      07/28/92
5,133,834                       07/421,094                      07/28/92
5,133,837                       07/579,535                      07/28/92
5,133,840                       07/523,764                      07/28/92
5,133,841                       07/460,059                      07/28/92
5,133,843                       07/580,231                      07/28/92
5,133,844                       07/494,074                      07/28/92
5,133,847                       07/662,310                      07/28/92
5,133,851                       07/701,714                      07/28/92
5,133,858                       07/621,229                      07/28/92
5,133,861                       07/727,665                      07/28/92
5,133,869                       07/771,750                      07/28/92
5,133,870                       07/367,396                      07/28/92
5,133,877                       07/677,738                      07/28/92
5,133,880                       07/666,400                      07/28/92
5,133,882                       07/588,268                      07/28/92
5,133,901                       07/663,962                      07/28/92
5,133,918                       07/540,449                      07/28/92
5,133,926                       07/687,148                      07/28/92
5,133,929                       07/547,403                      07/28/92
5,133,930                       07/492,367                      07/28/92
5,133,931                       07/573,410                      07/28/92
5,133,949                       07/465,067                      07/28/92
5,133,951                       07/540,897                      07/28/92
5,133,952                       07/603,245                      07/28/92
5,133,965                       07/460,838                      07/28/92
5,133,972                       07/546,345                      07/28/92
5,133,986                       07/593,141                      07/28/92
5,133,987                       07/427,885                      07/28/92
5,133,988                       07/648,111                      07/28/92
5,133,996                       07/784,289                      07/28/92
5,133,998                       07/681,709                      07/28/92
5,134,000                       07/519,473                      07/28/92
5,134,004                       07/669,684                      07/28/92
5,134,037                       07/645,695                      07/28/92
5,134,038                       07/754,343                      07/28/92
5,134,042                       07/365,910                      07/28/92
5,134,046                       07/504,468                      07/28/92
5,134,047                       07/507,882                      07/28/92
5,134,049                       07/757,294                      07/28/92
5,134,057                       07/419,310                      07/28/92
5,134,061                       07/671,992                      07/28/92
5,134,070                       07/605,392                      07/28/92
5,134,078                       07/746,814                      07/28/92
5,134,079                       07/329,340                      07/28/92
5,134,091                       07/678,434                      07/28/92
5,134,098                       07/824,219                      07/28/92
5,134,102                       07/617,723                      07/28/92
5,134,107                       07/756,105                      07/28/92
5,134,111                       07/451,468                      07/28/92
5,134,123                       07/318,576                      07/28/92
5,134,134                       07/699,412                      07/28/92
5,134,135                       07/541,658                      07/28/92
5,134,146                       07/706,707                      07/28/92
5,134,147                       07/779,828                      07/28/92
5,134,156                       07/585,009                      07/28/92
5,134,177                       07/694,629                      07/28/92
5,134,186                       07/399,868                      07/28/92
5,134,188                       07/675,388                      07/28/92
5,134,189                       07/433,910                      07/28/92
5,134,190                       07/482,581                      07/28/92
5,134,191                       07/478,522                      07/28/92
5,134,194                       07/644,564                      07/28/92
5,134,197                       07/457,940                      07/28/92
5,134,206                       07/668,146                      07/28/92
5,134,207                       07/393,205                      07/28/92
5,134,208                       07/766,257                      07/28/92
5,134,213                       07/753,934                      07/28/92
5,134,221                       07/781,497                      07/28/92
5,134,222                       07/812,663                      07/28/92
5,134,230                       07/614,417                      07/28/92
5,134,231                       07/642,531                      07/28/92
5,134,237                       07/606,361                      07/28/92
5,134,249                       07/691,395                      07/28/92
5,134,253                       07/714,675                      07/28/92
5,134,254                       07/800,448                      07/28/92
5,134,258                       07/666,320                      07/28/92
5,134,259                       07/514,163                      07/28/92
5,134,261                       07/503,494                      07/28/92
5,134,262                       07/527,034                      07/28/92
5,134,264                       07/691,434                      07/28/92
5,134,266                       07/604,674                      07/28/92
5,134,271                       07/665,211                      07/28/92
5,134,280                       07/715,025                      07/28/92
5,134,283                       07/654,757                      07/28/92
5,134,292                       07/745,965                      07/28/92
5,134,293                       07/218,234                      07/28/92
5,134,304                       07/700,758                      07/28/92
5,134,312                       07/691,454                      07/28/92
5,134,319                       07/638,917                      07/28/92
5,134,324                       07/626,764                      07/28/92
5,134,325                       07/665,370                      07/28/92
5,134,328                       07/680,305                      07/28/92
5,134,329                       07/730,973                      07/28/92
5,134,335                       07/602,923                      07/28/92
5,134,346                       07/404,319                      07/28/92
5,134,359                       07/336,943                      07/28/92
5,134,360                       07/670,111                      07/28/92
5,134,362                       07/681,055                      07/28/92
5,134,372                       07/613,760                      07/28/92
5,134,374                       07/555,269                      07/28/92
5,134,376                       07/603,794                      07/28/92
5,134,389                       07/473,490                      07/28/92
5,134,394                       07/508,963                      07/28/92
5,134,396                       07/514,818                      07/28/92
5,134,414                       07/672,464                      07/28/92
5,134,416                       07/461,734                      07/28/92
5,134,423                       07/617,715                      07/28/92
5,134,426                       07/500,902                      07/28/92
5,134,446                       07/725,889                      07/28/92
5,134,454                       07/721,967                      07/28/92
5,134,458                       07/790,016                      07/28/92
5,134,459                       07/623,668                      07/28/92
5,134,460                       07/609,057                      07/28/92
5,134,461                       07/623,204                      07/28/92
5,134,462                       07/728,822                      07/28/92
5,134,463                       07/595,408                      07/28/92
5,134,466                       07/628,611                      07/28/92
5,134,471                       07/696,146                      07/28/92
5,134,482                       07/618,346                      07/28/92
5,134,515                       07/613,788                      07/28/92
5,134,516                       07/669,572                      07/28/92
5,134,518                       07/551,590                      07/28/92
5,134,520                       07/691,333                      07/28/92
5,134,523                       07/806,805                      07/28/92
5,134,536                       07/477,869                      07/28/92
5,134,537                       07/803,756                      07/28/92
5,134,540                       07/758,623                      07/28/92
5,134,541                       07/613,259                      07/28/92
5,134,556                       07/601,845                      07/28/92
5,134,563                       07/407,078                      07/28/92
5,134,565                       07/672,660                      07/28/92
5,134,568                       07/477,338                      07/28/92
5,134,584                       07/223,084                      07/28/92
5,134,590                       07/707,363                      07/28/92
5,134,597                       07/659,833                      07/28/92
5,134,601                       07/392,035                      07/28/92
5,134,604                       07/637,154                      07/28/92
5,134,608                       07/532,470                      07/28/92
5,134,612                       07/459,849                      07/28/92
5,134,618                       07/455,257                      07/28/92
5,134,624                       07/628,874                      07/28/92
5,134,626                       07/573,119                      07/28/92
5,134,628                       07/687,736                      07/28/92
5,134,642                       07/613,498                      07/28/92
5,134,644                       07/569,894                      07/28/92
5,134,645                       07/374,428                      07/28/92
5,134,651                       07/687,310                      07/28/92
5,134,659                       07/558,342                      07/28/92
5,134,665                       07/655,055                      07/28/92
5,134,668                       07/477,275                      07/28/92
5,134,674                       07/446,271                      07/28/92
5,134,688                       07/624,465                      07/28/92
5,134,692                       07/355,770                      07/28/92
5,134,694                       07/336,175                      07/28/92
5,134,695                       07/616,738                      07/28/92
5,134,696                       07/225,445                      07/28/92
5,134,702                       06/854,380                      07/28/92
5,134,713                       07/354,446                      07/28/92

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

5,539,932                       08/492,843                      07/30/96
5,539,933                       08/245,204                      07/30/96
5,539,936                       08/553,045                      07/30/96
5,539,937                       08/127,866                      07/30/96
5,539,938                       08/538,905                      07/30/96
5,539,941                       08/202,270                      07/30/96
5,539,947                       08/441,207                      07/30/96
5,539,956                       08/523,368                      07/30/96
5,539,958                       08/527,721                      07/30/96
5,539,960                       07/150,360                      07/30/96
5,539,968                       08/335,497                      07/30/96
5,539,986                       08/505,595                      07/30/96
5,539,988                       08/563,357                      07/30/96
5,539,994                       08/139,765                      07/30/96
5,540,006                       08/338,958                      07/30/96
5,540,008                       08/333,785                      07/30/96
5,540,014                       08/260,324                      07/30/96
5,540,020                       08/311,439                      07/30/96
5,540,021                       08/082,969                      07/30/96
5,540,028                       08/270,493                      07/30/96
5,540,032                       08/291,993                      07/30/96
5,540,038                       08/253,683                      07/30/96
5,540,043                       08/273,861                      07/30/96
5,540,052                       08/291,122                      07/30/96
5,540,053                       08/356,185                      07/30/96
5,540,067                       08/377,751                      07/30/96
5,540,069                       08/050,337                      07/30/96
5,540,072                       08/220,468                      07/30/96
5,540,077                       08/258,432                      07/30/96
5,540,078                       08/416,584                      07/30/96
5,540,090                       08/339,762                      07/30/96
5,540,097                       08/207,117                      07/30/96
5,540,101                       08/438,212                      07/30/96
5,540,106                       08/014,708                      07/30/96
5,540,113                       08/306,477                      07/30/96
5,540,115                       08/393,806                      07/30/96
5,540,119                       08/312,809                      07/30/96
5,540,129                       08/117,179                      07/30/96
5,540,133                       08/190,081                      07/30/96
5,540,134                       06/869,513                      07/30/96
5,540,137                       08/321,294                      07/30/96
5,540,158                       08/297,124                      07/30/96
5,540,159                       08/446,292                      07/30/96
5,540,160                       08/240,268                      07/30/96
5,540,161                       08/521,120                      07/30/96
5,540,164                       08/392,824                      07/30/96
5,540,170                       08/291,985                      07/30/96
5,540,177                       08/493,693                      07/30/96
5,540,181                       08/456,474                      07/30/96
5,540,189                       08/385,692                      07/30/96
5,540,195                       08/524,632                      07/30/96
5,540,208                       08/527,366                      07/30/96
5,540,211                       08/243,152                      07/30/96
5,540,227                       08/443,071                      07/30/96
5,540,235                       08/268,638                      07/30/96
5,540,241                       08/219,668                      07/30/96
5,540,243                       08/488,576                      07/30/96
5,540,245                       08/374,188                      07/30/96
5,540,249                       08/337,694                      07/30/96
5,540,256                       08/391,012                      07/30/96
5,540,263                       08/394,449                      07/30/96
5,540,271                       08/114,734                      07/30/96
5,540,277                       08/070,407                      07/30/96
5,540,278                       08/456,317                      07/30/96
5,540,286                       08/279,481                      07/30/96
5,540,287                       08/323,831                      07/30/96
5,540,290                       08/421,803                      07/30/96
5,540,301                       08/328,683                      07/30/96
5,540,302                       08/263,625                      07/30/96
5,540,306                       08/537,362                      07/30/96
5,540,318                       08/407,969                      07/30/96
5,540,320                       08/342,269                      07/30/96
5,540,325                       08/391,896                      07/30/96
5,540,329                       08/495,381                      07/30/96
5,540,333                       08/381,415                      07/30/96
5,540,335                       08/497,786                      07/30/96
5,540,343                       08/504,956                      07/30/96
5,540,349                       08/399,442                      07/30/96
5,540,351                       08/328,799                      07/30/96
5,540,354                       08/377,225                      07/30/96
5,540,355                       07/998,784                      07/30/96
5,540,358                       08/359,155                      07/30/96
5,540,364                       08/298,972                      07/30/96
5,540,382                       08/501,783                      07/30/96
5,540,388                       08/352,095                      07/30/96
5,540,402                       08/382,114                      07/30/96
5,540,403                       08/345,600                      07/30/96
5,540,409                       08/360,168                      07/30/96
5,540,413                       08/057,556                      07/30/96
5,540,416                       08/424,652                      07/30/96
5,540,430                       08/330,354                      07/30/96
5,540,431                       08/297,380                      07/30/96
5,540,432                       08/381,566                      07/30/96
5,540,435                       07/950,878                      07/30/96
5,540,436                       08/329,087                      07/30/96
5,540,440                       08/521,040                      07/30/96
5,540,442                       08/423,098                      07/30/96
5,540,447                       08/310,217                      07/30/96
5,540,454                       08/376,023                      07/30/96
5,540,457                       08/299,483                      07/30/96
5,540,458                       08/353,245                      07/30/96
5,540,461                       08/318,763                      07/30/96
5,540,462                       08/387,784                      07/30/96
5,540,468                       08/304,407                      07/30/96
5,540,471                       08/450,408                      07/30/96
5,540,487                       08/373,310                      07/30/96
5,540,490                       08/368,433                      07/30/96
5,540,491                       08/261,403                      07/30/96
5,540,497                       08/441,389                      07/30/96
5,540,498                       08/282,241                      07/30/96
5,540,512                       08/285,789                      07/30/96
5,540,527                       08/349,610                      07/30/96
5,540,533                       08/290,988                      07/30/96
5,540,537                       08/517,117                      07/30/96
5,540,539                       08/370,016                      07/30/96
5,540,541                       08/435,618                      07/30/96
5,540,544                       08/305,036                      07/30/96
5,540,545                       08/418,503                      07/30/96
5,540,546                       08/233,041                      07/30/96
5,540,555                       08/318,040                      07/30/96
5,540,557                       08/438,246                      07/30/96
5,540,578                       08/257,092                      07/30/96
5,540,586                       08/321,014                      07/30/96
5,540,587                       08/400,472                      07/30/96
5,540,591                       08/326,901                      07/30/96
5,540,592                       08/104,062                      07/30/96
5,540,594                       08/267,989                      07/30/96
5,540,604                       08/263,833                      07/30/96
5,540,608                       08/379,255                      07/30/96
5,540,610                       08/335,646                      07/30/96
5,540,613                       08/384,993                      07/30/96
5,540,614                       08/284,459                      07/30/96
5,540,615                       08/246,119                      07/30/96
5,540,624                       08/450,317                      07/30/96
5,540,625                       08/508,352                      07/30/96
5,540,631                       08/319,669                      07/30/96
5,540,636                       08/225,188                      07/30/96
5,540,638                       08/442,890                      07/30/96
5,540,648                       08/274,401                      07/30/96
5,540,651                       08/230,294                      07/30/96
5,540,660                       08/365,672                      07/30/96
5,540,663                       08/530,125                      07/30/96
5,540,678                       08/264,360                      07/30/96
5,540,682                       08/372,368                      07/30/96
5,540,693                       08/330,919                      07/30/96
5,540,698                       08/123,752                      07/30/96
5,540,709                       08/342,417                      07/30/96
5,540,710                       08/312,466                      07/30/96
5,540,720                       08/494,666                      07/30/96
5,540,721                       08/339,914                      07/30/96
5,540,722                       08/243,229                      07/30/96
5,540,744                       08/503,438                      07/30/96
5,540,762                       08/372,493                      07/30/96
5,540,783                       08/249,597                      07/30/96
5,540,787                       08/490,365                      07/30/96
5,540,798                       08/382,509                      07/30/96
5,540,805                       08/374,961                      07/30/96
5,540,817                       08/184,591                      07/30/96
5,540,820                       08/076,691                      07/30/96
5,540,823                       07/864,177                      07/30/96
5,540,833                       08/189,268                      07/30/96
5,540,836                       08/260,702                      07/30/96
5,540,843                       08/371,698                      07/30/96
5,540,845                       08/108,635                      07/30/96
5,540,849                       08/383,187                      07/30/96
5,540,852                       08/381,579                      07/30/96
5,540,865                       08/372,713                      07/30/96
5,540,866                       08/395,550                      07/30/96
5,540,871                       08/360,440                      07/30/96
5,540,873                       08/301,004                      07/30/96
5,540,884                       08/190,088                      07/30/96
5,540,893                       07/702,435                      07/30/96
5,540,923                       07/801,816                      07/30/96
5,540,931                       08/265,471                      07/30/96
5,540,949                       06/855,244                      07/30/96
5,540,973                       08/143,897                      07/30/96
5,540,992                       08/170,279                      07/30/96
5,540,996                       06/534,453                      07/30/96
5,540,997                       08/402,588                      07/30/96
5,540,998                       08/302,768                      07/30/96
5,541,004                       08/303,567                      07/30/96
5,541,009                       08/513,683                      07/30/96
5,541,010                       06/534,871                      07/30/96
5,541,035                       08/242,039                      07/30/96
5,541,051                       08/374,177                      07/30/96
5,541,052                       08/341,896                      07/30/96
5,541,073                       08/231,145                      07/30/96
5,541,076                       08/460,496                      07/30/96
5,541,078                       07/961,724                      07/30/96
5,541,080                       08/069,277                      07/30/96
5,541,081                       08/215,524                      07/30/96
5,541,087                       08/305,700                      07/30/96
5,541,095                       08/057,167                      07/30/96
5,541,113                       08/125,437                      07/30/96
5,541,115                       07/710,237                      07/30/96
5,541,128                       08/533,406                      07/30/96
5,541,159                       08/346,118                      07/30/96
5,541,165                       08/313,393                      07/30/96
5,541,168                       08/348,411                      07/30/96
5,541,169                       08/232,245                      07/30/96
5,541,176                       08/451,642                      07/30/96
5,541,177                       08/470,688                      07/30/96
5,541,182                       08/391,835                      07/30/96
5,541,187                       08/159,158                      07/30/96
5,541,202                       08/193,192                      07/30/96
5,541,207                       08/476,563                      07/30/96
5,541,215                       08/432,757                      07/30/96
5,541,219                       08/295,747                      07/30/96
5,541,232                       08/264,740                      07/30/96
5,541,239                       08/378,046                      07/30/96
5,541,240                       08/213,207                      07/30/96
5,541,243                       08/268,272                      07/30/96
5,541,273                       08/435,316                      07/30/96
5,541,275                       08/207,946                      07/30/96
5,541,290                       08/082,274                      07/30/96
5,541,323                       08/374,285                      07/30/96
5,541,329                       08/363,173                      07/30/96
5,541,348                       08/208,224                      07/30/96
5,541,371                       08/069,997                      07/30/96
5,541,377                       08/286,700                      07/30/96
5,541,383                       08/385,510                      07/30/96
5,541,385                       08/157,006                      07/30/96
5,541,388                       08/365,501                      07/30/96
5,541,391                       08/250,624                      07/30/96
5,541,413                       08/307,734                      07/30/96
5,541,417                       08/443,920                      07/30/96
5,541,424                       08/256,600                      07/30/96
5,541,457                       08/489,671                      07/30/96
5,541,463                       08/077,617                      07/30/96
5,541,500                       07/714,582                      07/30/96
5,541,506                       08/142,092                      07/30/96
5,541,512                       08/313,957                      07/30/96
5,541,520                       08/333,084                      07/30/96
5,541,544                       08/307,464                      07/30/96
5,541,545                       08/486,327                      07/30/96
5,541,575                       08/278,442                      07/30/96
5,541,577                       08/452,381                      07/30/96
5,541,579                       08/408,981                      07/30/96
5,541,588                       08/283,770                      07/30/96
5,541,590                       08/375,249                      07/30/96
5,541,603                       08/488,801                      07/30/96
5,541,609                       08/400,583                      07/30/96
5,541,621                       08/489,625                      07/30/96
5,541,646                       08/378,045                      07/30/96
5,541,664                       08/514,688                      07/30/96
5,541,667                       07/998,414                      07/30/96
5,541,669                       08/387,632                      07/30/96
5,541,675                       08/413,004                      07/30/96
5,541,682                       08/388,073                      07/30/96
5,541,694                       08/551,001                      07/30/96
5,541,698                       08/336,684                      07/30/96
5,541,710                       08/533,072                      07/30/96
5,541,726                       08/229,704                      07/30/96
5,541,755                       08/315,614                      07/30/96
5,541,763                       08/211,821                      07/30/96
5,541,765                       08/238,711                      07/30/96
5,541,770                       08/316,037                      07/30/96
5,541,779                       08/341,864                      07/30/96
5,541,790                       08/295,237                      07/30/96
5,541,797                       08/550,182                      07/30/96
5,541,803                       08/206,966                      07/30/96
5,541,817                       08/492,707                      07/30/96
5,541,818                       08/386,937                      07/30/96
5,541,835                       08/095,520                      07/30/96
5,541,844                       08/493,057                      07/30/96
5,541,846                       08/327,694                      07/30/96
5,541,863                       08/316,286                      07/30/96
5,541,897                       08/259,218                      07/30/96
5,541,914                       08/184,551                      07/30/96
5,541,915                       08/213,256                      07/30/96
5,541,939                       08/325,021                      07/30/96
5,541,959                       08/454,575                      07/30/96
5,541,969                       08/295,201                      07/30/96
5,541,980                       08/330,197                      07/30/96
5,542,001                       08/350,429                      07/30/96
5,542,009                       08/374,709                      07/30/96
5,542,020                       08/258,532                      07/30/96
5,542,031                       08/055,978                      07/30/96
5,542,049                       07/968,678                      07/30/96
5,542,066                       08/172,527                      07/30/96
5,542,074                       07/965,938                      07/30/96
5,542,102                       08/283,422                      07/30/96
5,542,118                       08/305,218                      07/30/96
5,542,120                       08/039,313                      07/30/96