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 July 12, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent Number             Serial Number                Issue Date

4,756,032                   06/913,113                   07/12/88
4,756,033                   06/829,965                   07/12/88
4,756,035                   07/074,891                   07/12/88
4,756,036                   07/045,237                   07/12/88
4,756,038                   07/099,701                   07/12/88
4,756,039                   07/066,799                   07/12/88
4,756,045                   06/947,598                   07/12/88
4,756,046                   07/077,427                   07/12/88
4,756,055                   06/938,790                   07/12/88
4,756,064                   07/013,280                   07/12/88
4,756,069                   06/902,134                   07/12/88
4,756,081                   06/768,318                   07/12/88
4,756,090                   07/084,674                   07/12/88
4,756,102                   07/019,747                   07/12/88
4,756,105                   07/009,451                   07/12/88
4,756,124                   07/008,586                   07/12/88
4,756,127                   06/869,081                   07/12/88
4,756,128                   07/079,571                   07/12/88
4,756,131                   07/003,415                   07/12/88
4,756,133                   06/796,915                   07/12/88
4,756,136                   07/029,884                   07/12/88
4,756,138                   07/010,273                   07/12/88
4,756,141                   07/041,150                   07/12/88
4,756,144                   06/865,886                   07/12/88
4,756,145                   06/932,548                   07/12/88
4,756,146                   07/016,010                   07/12/88
4,756,156                   06/915,156                   07/12/88
4,756,161                   06/706,623                   07/12/88
4,756,175                   07/024,618                   07/12/88
4,756,186                   07/093,132                   07/12/88
4,756,189                   06/829,340                   07/12/88
4,756,207                   06/913,284                   07/12/88
4,756,211                   06/906,089                   07/12/88
4,756,219                   07/105,408                   07/12/88
4,756,220                   07/001,703                   07/12/88
4,756,223                   07/064,055                   07/12/88
4,756,231                   06/894,040                   07/12/88
4,756,235                   06/907,839                   07/12/88
4,756,240                   06/876,062                   07/12/88
4,756,243                   06/800,261                   07/12/88
4,756,248                   07/101,906                   07/12/88
4,756,250                   06/860,803                   07/12/88
4,756,254                   06/866,860                   07/12/88
4,756,255                   07/089,949                   07/12/88
4,756,287                   07/046,452                   07/12/88
4,756,290                   06/864,863                   07/12/88
4,756,296                   07/011,692                   07/12/88
4,756,299                   07/121,929                   07/12/88
4,756,305                   06/910,622                   07/12/88
4,756,314                   07/052,315                   07/12/88
4,756,327                   07/042,858                   07/12/88
4,756,330                   07/027,338                   07/12/88
4,756,335                   07/055,837                   07/12/88
4,756,341                   06/903,816                   07/12/88
4,756,344                   07/072,449                   07/12/88
4,756,348                   06/894,041                   07/12/88
4,756,363                   07/003,568                   07/12/88
4,756,380                   07/065,981                   07/12/88
4,756,383                   06/844,310                   07/12/88
4,756,389                   07/078,998                   07/12/88
4,756,396                   07/049,810                   07/12/88
4,756,405                   07/060,500                   07/12/88
4,756,407                   07/132,808                   07/12/88
4,756,408                   07/084,280                   07/12/88
4,756,414                   06/785,808                   07/12/88
4,756,415                   06/883,546                   07/12/88
4,756,416                   07/031,775                   07/12/88
4,756,430                   07/127,051                   07/12/88
4,756,431                   07/002,547                   07/12/88
4,756,448                   06/906,134                   07/12/88
4,756,460                   07/026,709                   07/12/88
4,756,467                   06/848,028                   07/12/88
4,756,468                   07/017,078                   07/12/88
4,756,470                   07/021,649                   07/12/88
4,756,476                   06/904,176                   07/12/88
4,756,483                   06/943,552                   07/12/88
4,756,487                   07/080,612                   07/12/88
4,756,492                   07/032,747                   07/12/88
4,756,494                   06/826,719                   07/12/88
4,756,495                   06/915,404                   07/12/88
4,756,500                   07/056,719                   07/12/88
4,756,506                   06/928,197                   07/12/88
4,756,525                   06/825,987                   07/12/88
4,756,534                   06/929,099                   07/12/88
4,756,535                   07/039,180                   07/12/88
4,756,536                   07/109,089                   07/12/88
4,756,546                   07/025,587                   07/12/88
4,756,547                   07/017,887                   07/12/88
4,756,557                   06/812,894                   07/12/88
4,756,559                   06/945,551                   07/12/88
4,756,561                   06/827,454                   07/12/88
4,756,570                   07/052,479                   07/12/88
4,756,582                   06/937,484                   07/12/88
4,756,587                   07/084,124                   07/12/88
4,756,591                   06/698,712                   07/12/88
4,756,596                   06/918,257                   07/12/88
4,756,603                   06/899,168                   07/12/88
4,756,625                   06/880,041                   07/12/88
4,756,630                   06/376,250                   07/12/88
4,756,637                   06/928,325                   07/12/88
4,756,645                   06/877,426                   07/12/88
4,756,662                   07/031,595                   07/12/88
4,756,664                   07/017,977                   07/12/88
4,756,672                   06/938,503                   07/12/88
4,756,675                   07/051,774                   07/12/88
4,756,680                   06/843,689                   07/12/88
4,756,681                   06/792,336                   07/12/88
4,756,696                   07/011,560                   07/12/88
4,756,700                   07/048,080                   07/12/88
4,756,718                   07/026,190                   07/12/88
4,756,722                   07/024,012                   07/12/88
4,756,745                   07/008,526                   07/12/88
4,756,749                   06/939,402                   07/12/88
4,756,751                   06/843,904                   07/12/88
4,756,759                   07/027,151                   07/12/88
4,756,761                   06/875,031                   07/12/88
4,756,762                   07/074,527                   07/12/88
4,756,770                   06/828,335                   07/12/88
4,756,773                   06/898,622                   07/12/88
4,756,774                   06/834,907                   07/12/88
4,756,782                   06/860,322                   07/12/88
4,756,792                   06/904,178                   07/12/88
4,756,799                   06/839,022                   07/12/88
4,756,803                   06/788,978                   07/12/88
4,756,805                   06/918,409                   07/12/88
4,756,808                   06/869,633                   07/12/88
4,756,810                   06/938,043                   07/12/88
4,756,812                   07/037,888                   07/12/88
4,756,813                   06/925,110                   07/12/88
4,756,817                   06/901,924                   07/12/88
4,756,819                   06/673,325                   07/12/88
4,756,832                   07/087,858                   07/12/88
4,756,845                   06/867,513                   07/12/88
4,756,847                   06/817,274                   07/12/88
4,756,849                   06/864,174                   07/12/88
4,756,850                   07/061,060                   07/12/88
4,756,852                   06/892,440                   07/12/88
4,756,854                   06/607,450                   07/12/88
4,756,857                   06/756,172                   07/12/88
4,756,860                   06/385,668                   07/12/88
4,756,862                   06/878,515                   07/12/88
4,756,864                   06/851,583                   07/12/88
4,756,865                   07/058,768                   07/12/88
4,756,868                   06/822,167                   07/12/88
4,756,880                   07/104,239                   07/12/88
4,756,887                   06/626,724                   07/12/88
4,756,888                   06/566,714                   07/12/88
4,756,892                   06/467,066                   07/12/88
4,756,894                   07/008,525                   07/12/88
4,756,907                   06/822,236                   07/12/88
4,756,908                   06/743,877                   07/12/88
4,756,911                   06/852,681                   07/12/88
4,756,917                   06/932,429                   07/12/88
4,756,922                   07/047,779                   07/12/88
4,756,925                   07/028,253                   07/12/88
4,756,933                   06/886,547                   07/12/88
4,756,940                   06/843,952                   07/12/88
4,756,941                   07/003,973                   07/12/88
4,756,950                   06/841,607                   07/12/88
4,756,954                   07/045,972                   07/12/88
4,756,956                   07/103,864                   07/12/88
4,756,962                   07/041,177                   07/12/88
4,756,966                   07/075,561                   07/12/88
4,756,972                   06/618,799                   07/12/88
4,756,975                   06/796,450                   07/12/88
4,756,984                   07/008,668                   07/12/88
4,756,994                   06/871,759                   07/12/88
4,756,998                   06/915,045                   07/12/88
4,757,017                   06/651,392                   07/12/88
4,757,022                   07/122,395                   07/12/88
4,757,024                   06/763,955                   07/12/88
4,757,028                   06/914,498                   07/12/88
4,757,033                   06/846,090                   07/12/88
4,757,036                   07/097,369                   07/12/88
4,757,037                   06/835,213                   07/12/88
4,757,047                   06/895,431                   07/12/88
4,757,051                   07/084,163                   07/12/88
4,757,054                   07/004,308                   07/12/88
4,757,055                   06/604,919                   07/12/88
4,757,067                   07/005,657                   07/12/88
4,757,070                   07/130,049                   07/12/88
4,757,078                   06/936,064                   07/12/88
4,757,081                   07/029,944                   07/12/88
4,757,083                   06/936,445                   07/12/88
4,757,104                   07/011,562                   07/12/88
4,757,108                   06/875,536                   07/12/88
4,757,112                   07/086,202                   07/12/88
4,757,121                   07/096,651                   07/12/88
4,757,123                   07/080,836                   07/12/88
4,757,129                   06/899,570                   07/12/88
4,757,135                   06/915,941                   07/12/88
4,757,143                   06/871,939                   07/12/88
4,757,147                   06/772,972                   07/12/88
4,757,148                   06/929,095                   07/12/88
4,757,152                   06/796,739                   07/12/88
4,757,154                   06/926,662                   07/12/88
4,757,162                   07/075,250                   07/12/88
4,757,169                   06/940,066                   07/12/88
4,757,172                   07/100,743                   07/12/88
4,757,175                   07/000,076                   07/12/88
4,757,177                   06/904,469                   07/12/88
4,757,178                   07/039,103                   07/12/88
4,757,181                   06/884,892                   07/12/88
4,757,192                   07/054,641                   07/12/88
4,757,193                   06/944,043                   07/12/88
4,757,195                   06/878,656                   07/12/88
4,757,196                   06/654,133                   07/12/88
4,757,203                   07/039,917                   07/12/88
4,757,216                   06/942,186                   07/12/88
4,757,218                   07/001,920                   07/12/88
4,757,223                   07/004,587                   07/12/88
4,757,224                   06/911,379                   07/12/88
4,757,225                   07/064,720                   07/12/88
4,757,226                   07/089,498                   07/12/88
4,757,228                   07/007,679                   07/12/88
4,757,252                   06/791,303                   07/12/88
4,757,258                   06/802,556                   07/12/88
4,757,262                   06/854,147                   07/12/88
4,757,266                   06/896,985                   07/12/88
4,757,272                   06/880,836                   07/12/88
4,757,273                   07/072,735                   07/12/88
4,757,279                   07/105,363                   07/12/88
4,757,285                   07/069,169                   07/12/88
4,757,286                   07/054,504                   07/12/88
4,757,287                   07/110,755                   07/12/88
4,757,290                   07/011,630                   07/12/88
4,757,297                   06/932,184                   07/12/88
4,757,301                   06/767,804                   07/12/88
4,757,303                   07/057,161                   07/12/88
4,757,306                   07/001,449                   07/12/88
4,757,309                   06/748,259                   07/12/88
4,757,311                   06/649,481                   07/12/88
4,757,335                   07/029,439                   07/12/88
4,757,353                   07/033,095                   07/12/88
4,757,357                   06/798,659                   07/12/88
4,757,361                   06/889,137                   07/12/88
4,757,365                   07/048,474                   07/12/88
4,757,369                   07/060,700                   07/12/88
4,757,370                   07/002,582                   07/12/88
4,757,373                   06/928,339                   07/12/88
4,757,380                   06/886,690                   07/12/88
4,757,386                   06/938,582                   07/12/88
4,757,400                   06/879,575                   07/12/88
4,757,404                   06/909,821                   07/12/88
4,757,414                   06/892,752                   07/12/88
4,757,423                   07/014,481                   07/12/88
4,757,426                   06/927,827                   07/12/88
4,757,441                   07/068,769                   07/12/88
4,757,449                   06/799,778                   07/12/88
4,757,459                   06/868,412                   07/12/88
4,757,466                   06/769,306                   07/12/88
4,757,467                   06/863,431                   07/12/88
4,757,469                   06/825,178                   07/12/88
4,757,470                   07/068,701                   07/12/88
4,757,475                   06/863,041                   07/12/88
4,757,477                   07/058,775                   07/12/88
4,757,480                   06/855,864                   07/12/88
4,757,487                   06/734,774                   07/12/88
4,757,489                   06/903,014                   07/12/88
4,757,491                   06/923,436                   07/12/88
4,757,494                   07/116,181                   07/12/88
4,757,496                   06/852,171                   07/12/88
4,757,497                   06/937,548                   07/12/88
4,757,499                   06/944,134                   07/12/88
4,757,500                   06/944,090                   07/12/88
4,757,501                   06/944,102                   07/12/88
4,757,506                   07/001,866                   07/12/88
4,757,509                   06/888,398                   07/12/88
4,757,510                   06/911,153                   07/12/88
4,757,513                   06/888,015                   07/12/88
4,757,521                   06/611,094                   07/12/88
4,757,543                   06/902,884                   07/12/88
4,757,549                   06/808,263                   07/12/88
4,757,552                   06/787,401                   07/12/88

                     PATENTS WHICH EXPIRED ON July 7, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,127,106                   07/661,408                   07/07/92
5,127,107                   07/703,693                   07/07/92
5,127,112                   07/370,758                   07/07/92
5,127,114                   07/802,128                   07/07/92
5,127,118                   07/746,040                   07/07/92
5,127,120                   07/739,300                   07/07/92
5,127,123                   07/209,669                   07/07/92
5,127,126                   07/679,397                   07/07/92
5,127,129                   07/383,705                   07/07/92
5,127,132                   07/733,893                   07/07/92
5,127,134                   07/622,619                   07/07/92
5,127,139                   07/682,622                   07/07/92
5,127,145                   07/530,130                   07/07/92
5,127,151                   07/646,921                   07/07/92
5,127,152                   07/675,581                   07/07/92
5,127,163                   07/729,571                   07/07/92
5,127,164                   07/733,156                   07/07/92
5,127,165                   07/581,718                   07/07/92
5,127,166                   07/665,081                   07/07/92
5,127,171                   07/564,432                   07/07/92
5,127,172                   07/766,980                   07/07/92
5,127,176                   07/609,303                   07/07/92
5,127,177                   07/542,914                   07/07/92
5,127,178                   07/517,939                   07/07/92
5,127,182                   07/608,706                   07/07/92
5,127,183                   07/666,147                   07/07/92
5,127,185                   06/643,213                   07/07/92
5,127,198                   07/690,401                   07/07/92
5,127,200                   07/680,847                   07/07/92
5,127,217                   07/682,485                   07/07/92
5,127,226                   07/706,867                   07/07/92
5,127,232                   07/612,643                   07/07/92
5,127,235                   07/626,042                   07/07/92
5,127,248                   07/711,063                   07/07/92
5,127,255                   07/722,635                   07/07/92
5,127,257                   07/563,027                   07/07/92
5,127,259                   07/666,098                   07/07/92
5,127,260                   07/641,122                   07/07/92
5,127,262                   07/696,799                   07/07/92
5,127,270                   07/591,534                   07/07/92
5,127,271                   07/634,570                   07/07/92
5,127,272                   07/637,024                   07/07/92
5,127,275                   07/573,971                   07/07/92
5,127,277                   07/555,051                   07/07/92
5,127,280                   07/654,690                   07/07/92
5,127,281                   07/651,969                   07/07/92
5,127,282                   07/809,046                   07/07/92
5,127,284                   07/594,663                   07/07/92
5,127,285                   07/561,333                   07/07/92
5,127,286                   07/649,312                   07/07/92
5,127,295                   07/682,114                   07/07/92
5,127,308                   07/583,285                   07/07/92
5,127,310                   07/628,229                   07/07/92
5,127,311                   07/650,107                   07/07/92
5,127,312                   06/760,631                   07/07/92
5,127,313                   07/714,013                   07/07/92
5,127,314                   07/620,117                   07/07/92
5,127,326                   07/692,351                   07/07/92
5,127,338                   07/534,763                   07/07/92
5,127,345                   07/787,740                   07/07/92
5,127,349                   07/518,518                   07/07/92
5,127,351                   07/641,775                   07/07/92
5,127,354                   07/665,319                   07/07/92
5,127,358                   07/706,799                   07/07/92
5,127,359                   07/585,681                   07/07/92
5,127,367                   07/636,207                   07/07/92
5,127,377                   07/567,562                   07/07/92
5,127,388                   07/671,332                   07/07/92
5,127,389                   07/401,005                   07/07/92
5,127,395                   07/614,495                   07/07/92
5,127,405                   07/481,131                   07/07/92
5,127,407                   07/612,744                   07/07/92
5,127,421                   07/641,500                   07/07/92
5,127,428                   07/618,039                   07/07/92
5,127,434                   07/645,248                   07/07/92
5,127,440                   07/622,214                   07/07/92
5,127,444                   07/661,530                   07/07/92
5,127,452                   07/733,637                   07/07/92
5,127,453                   07/697,171                   07/07/92
5,127,459                   07/743,889                   07/07/92
5,127,467                   07/542,429                   07/07/92
5,127,469                   07/731,270                   07/07/92
5,127,480                   07/634,703                   07/07/92
5,127,489                   07/544,528                   07/07/92
5,127,496                   07/640,773                   07/07/92
5,127,502                   07/767,443                   07/07/92
5,127,503                   07/722,591                   07/07/92
5,127,506                   07/637,357                   07/07/92
5,127,509                   07/714,212                   07/07/92
5,127,517                   07/478,427                   07/07/92
5,127,521                   07/748,035                   07/07/92
5,127,525                   07/613,237                   07/07/92
5,127,535                   07/651,615                   07/07/92
5,127,537                   07/710,587                   07/07/92
5,127,538                   07/736,470                   07/07/92
5,127,539                   07/525,975                   07/07/92
5,127,540                   07/549,859                   07/07/92
5,127,550                   07/586,897                   07/07/92
5,127,551                   07/616,117                   07/07/92
5,127,553                   07/583,951                   07/07/92
5,127,559                   07/669,102                   07/07/92
5,127,563                   07/637,174                   07/07/92
5,127,579                   07/609,896                   07/07/92
5,127,581                   07/644,651                   07/07/92
5,127,589                   07/671,511                   07/07/92
5,127,613                   07/585,158                   07/07/92
5,127,626                   07/590,181                   07/07/92
5,127,627                   07/711,445                   07/07/92
5,127,629                   07/705,469                   07/07/92
5,127,637                   07/587,271                   07/07/92
5,127,638                   07/667,350                   07/07/92
5,127,641                   07/659,097                   07/07/92
5,127,646                   07/615,589                   07/07/92
5,127,647                   07/672,429                   07/07/92
5,127,650                   07/735,074                   07/07/92
5,127,652                   07/611,234                   07/07/92
5,127,658                   07/576,220                   07/07/92
5,127,664                   07/766,839                   07/07/92
5,127,666                   07/553,324                   07/07/92
5,127,667                   07/611,802                   07/07/92
5,127,669                   07/731,174                   07/07/92
5,127,670                   07/661,151                   07/07/92
5,127,672                   07/551,950                   07/07/92
5,127,683                   07/708,338                   07/07/92
5,127,688                   07/768,197                   07/07/92
5,127,691                   07/639,801                   07/07/92
5,127,698                   07/674,118                   07/07/92
5,127,700                   07/610,398                   07/07/92
5,127,702                   07/660,261                   07/07/92
5,127,703                   07/617,171                   07/07/92
5,127,705                   07/423,437                   07/07/92
5,127,709                   07/643,027                   07/07/92
5,127,711                   07/681,980                   07/07/92
5,127,713                   07/281,299                   07/07/92
5,127,724                   07/571,629                   07/07/92
5,127,727                   07/707,830                   07/07/92
5,127,735                   07/577,737                   07/07/92
5,127,755                   07/625,202                   07/07/92
5,127,756                   07/665,008                   07/07/92
5,127,763                   07/754,138                   07/07/92
5,127,768                   07/646,854                   07/07/92
5,127,775                   07/786,599                   07/07/92
5,127,779                   07/577,856                   07/07/92
5,127,781                   07/578,738                   07/07/92
5,127,790                   07/644,957                   07/07/92
5,127,803                   07/480,952                   07/07/92
5,127,805                   07/742,444                   07/07/92
5,127,810                   07/636,910                   07/07/92
5,127,813                   07/655,177                   07/07/92
5,127,823                   07/616,609                   07/07/92
5,127,832                   07/601,759                   07/07/92
5,127,833                   07/470,784                   07/07/92
5,127,834                   07/451,994                   07/07/92
5,127,835                   07/254,357                   07/07/92
5,127,838                   07/484,579                   07/07/92
5,127,846                   07/713,826                   07/07/92
5,127,849                   07/706,424                   07/07/92
5,127,852                   07/602,603                   07/07/92
5,127,860                   07/631,364                   07/07/92
5,127,861                   07/604,221                   07/07/92
5,127,863                   07/679,975                   07/07/92
5,127,867                   07/610,405                   07/07/92
5,127,868                   07/641,767                   07/07/92
5,127,869                   07/761,265                   07/07/92
5,127,875                   07/616,364                   07/07/92
5,127,879                   07/334,183                   07/07/92
5,127,882                   07/640,291                   07/07/92
5,127,884                   07/668,957                   07/07/92
5,127,886                   07/696,886                   07/07/92
5,127,889                   07/551,247                   07/07/92
5,127,896                   07/402,359                   07/07/92
5,127,899                   07/653,657                   07/07/92
5,127,902                   07/577,633                   07/07/92
5,127,904                   07/503,278                   07/07/92
5,127,914                   07/478,301                   07/07/92
5,127,919                   07/644,674                   07/07/92
5,127,921                   07/668,392                   07/07/92
5,127,922                   07/407,882                   07/07/92
5,127,923                   07/593,310                   07/07/92
5,127,924                   07/723,940                   07/07/92
5,127,933                   07/684,778                   07/07/92
5,127,936                   07/635,525                   07/07/92
5,127,937                   07/473,809                   07/07/92
5,127,941                   07/541,630                   07/07/92
5,127,943                   07/369,892                   07/07/92
5,127,948                   07/503,629                   07/07/92
5,127,952                   07/530,442                   07/07/92
5,127,963                   07/673,021                   07/07/92
5,127,969                   07/497,494                   07/07/92
5,127,971                   07/656,787                   07/07/92
5,127,976                   07/414,731                   07/07/92
5,127,980                   07/687,121                   07/07/92
5,127,985                   07/678,108                   07/07/92
5,127,990                   07/377,090                   07/07/92
5,127,993                   07/463,084                   07/07/92
5,127,997                   07/697,385                   07/07/92
5,127,998                   07/459,844                   07/07/92
5,128,002                   07/592,917                   07/07/92
5,128,008                   07/682,994                   07/07/92
5,128,009                   07/621,033                   07/07/92
5,128,016                   07/804,006                   07/07/92
5,128,018                   07/628,206                   07/07/92
5,128,025                   07/803,936                   07/07/92
5,128,032                   07/601,195                   07/07/92
5,128,033                   07/558,693                   07/07/92
5,128,036                   07/589,790                   07/07/92
5,128,038                   07/398,827                   07/07/92
5,128,042                   07/722,010                   07/07/92
5,128,046                   07/509,534                   07/07/92
5,128,052                   07/641,482                   07/07/92
5,128,056                   07/672,223                   07/07/92
5,128,059                   07/759,995                   07/07/92
5,128,061                   07/567,268                   07/07/92
5,128,062                   07/534,610                   07/07/92
5,128,064                   07/694,594                   07/07/92
5,128,065                   07/592,408                   07/07/92
5,128,067                   07/810,042                   07/07/92
5,128,074                   07/438,304                   07/07/92
5,128,080                   07/575,134                   07/07/92
5,128,086                   07/232,420                   07/07/92
5,128,088                   07/567,111                   07/07/92
5,128,095                   07/658,323                   07/07/92
5,128,096                   07/508,581                   07/07/92
5,128,097                   07/449,916                   07/07/92
5,128,102                   07/295,596                   07/07/92
5,128,107                   07/628,985                   07/07/92
5,128,112                   07/679,487                   07/07/92
5,128,115                   07/681,296                   07/07/92
5,128,122                   07/604,820                   07/07/92
5,128,126                   07/505,269                   07/07/92
5,128,129                   07/591,999                   07/07/92
5,128,134                   07/461,188                   07/07/92
5,128,135                   07/468,374                   07/07/92
5,128,144                   07/587,841                   07/07/92
5,128,152                   07/711,104                   07/07/92
5,128,156                   07/616,909                   07/07/92
5,128,161                   07/668,159                   07/07/92
5,128,167                   07/668,093                   07/07/92
5,128,168                   07/536,773                   07/07/92
5,128,186                   07/583,091                   07/07/92
5,128,188                   07/593,036                   07/07/92
5,128,189                   07/395,892                   07/07/92
5,128,191                   07/677,892                   07/07/92
5,128,192                   07/474,965                   07/07/92
5,128,195                   07/492,509                   07/07/92
5,128,205                   07/704,961                   07/07/92
5,128,215                   07/353,978                   07/07/92
5,128,231                   07/798,975                   07/07/92
5,128,240                   07/296,542                   07/07/92
5,128,243                   07/544,890                   07/07/92
5,128,247                   07/394,092                   07/07/92
5,128,249                   06/731,722                   07/07/92
5,128,250                   07/321,095                   07/07/92
5,128,253                   07/708,543                   07/07/92
5,128,262                   07/251,450                   07/07/92
5,128,266                   07/543,484                   07/07/92
5,128,270                   07/299,803                   07/07/92
5,128,271                   07/608,508                   07/07/92
5,128,274                   07/721,186                   07/07/92
5,128,276                   07/626,585                   07/07/92
5,128,286                   07/539,177                   07/07/92
5,128,287                   07/441,380                   07/07/92
5,128,289                   07/623,785                   07/07/92
5,128,299                   07/623,091                   07/07/92
5,128,305                   07/417,422                   07/07/92
5,128,311                   07/499,427                   07/07/92
5,128,324                   07/399,581                   07/07/92
5,128,325                   07/796,925                   07/07/92
5,128,327                   07/674,836                   07/07/92
5,128,329                   07/360,994                   07/07/92
5,128,335                   07/597,638                   07/07/92
5,128,338                   07/666,802                   07/07/92
5,128,339                   07/782,016                   07/07/92
5,128,350                   07/780,303                   07/07/92
5,128,351                   07/519,525                   07/07/92
5,128,362                   07/470,210                   07/07/92
5,128,365                   07/383,189                   07/07/92
5,128,370                   07/325,810                   07/07/92
5,128,371                   07/731,356                   07/07/92
5,128,376                   07/577,831                   07/07/92
5,128,378                   07/591,810                   07/07/92
5,128,379                   07/674,438                   07/07/92
5,128,380                   07/513,660                   07/07/92
5,128,381                   07/634,541                   07/07/92
5,128,382                   07/794,124                   07/07/92
5,128,388                   07/277,347                   07/07/92
5,128,417                   07/539,296                   07/07/92
5,128,421                   07/660,954                   07/07/92
5,128,426                   07/627,146                   07/07/92
5,128,429                   07/645,914                   07/07/92
5,128,433                   07/710,068                   07/07/92
5,128,435                   07/552,514                   07/07/92
5,128,443                   07/686,204                   07/07/92
5,128,444                   07/510,016                   07/07/92
5,128,452                   07/340,609                   07/07/92
5,128,455                   07/454,373                   07/07/92
5,128,459                   07/533,353                   07/07/92
5,128,460                   07/504,775                   07/07/92
5,128,463                   07/645,518                   07/07/92
5,128,464                   07/526,527                   07/07/92
5,128,471                   07/507,701                   07/07/92
5,128,473                   07/649,493                   07/07/92
5,128,476                   07/658,242                   07/07/92
5,128,479                   07/471,886                   07/07/92
5,128,481                   07/734,292                   07/07/92
5,128,487                   07/542,447                   07/07/92
5,128,488                   07/515,314                   07/07/92
5,128,492                   07/702,522                   07/07/92
5,128,496                   07/706,132                   07/07/92
5,128,497                   07/460,445                   07/07/92
5,128,509                   07/576,790                   07/07/92
5,128,512                   07/624,183                   07/07/92
5,128,535                   07/733,757                   07/07/92
5,128,540                   07/694,295                   07/07/92
5,128,546                   07/458,188                   07/07/92
5,128,549                   07/502,359                   07/07/92
5,128,550                   07/572,184                   07/07/92
5,128,561                   07/716,956                   07/07/92
5,128,568                   07/592,156                   07/07/92
5,128,578                   07/298,351                   07/07/92
5,128,583                   07/573,314                   07/07/92
5,128,593                   07/470,010                   07/07/92
5,128,594                   07/662,039                   07/07/92
5,128,599                   07/588,009                   07/07/92
5,128,603                   07/518,708                   07/07/92
5,128,608                   07/603,363                   07/07/92
5,128,611                   07/489,506                   07/07/92
5,128,612                   07/560,404                   07/07/92
5,128,618                   07/647,970                   07/07/92
5,128,620                   07/564,136                   07/07/92
5,128,635                   07/345,179                   07/07/92
5,128,639                   07/698,079                   07/07/92
5,128,646                   07/599,717                   07/07/92
5,128,648                   07/600,626                   07/07/92
5,128,652                   07/588,022                   07/07/92
5,128,653                   07/798,826                   07/07/92
5,128,657                   07/582,500                   07/07/92
5,128,661                   07/568,173                   07/07/92
5,128,667                   07/701,237                   07/07/92
5,128,671                   07/509,464                   07/07/92
5,128,675                   07/762,341                   07/07/92
5,128,676                   07/533,678                   07/07/92
5,128,678                   07/421,489                   07/07/92
5,128,695                   07/681,002                   07/07/92
5,128,710                   07/573,180                   07/07/92
5,128,721                   07/309,761                   07/07/92
5,128,724                   07/452,282                   07/07/92
5,128,732                   07/199,439                   07/07/92
5,128,736                   07/649,294                   07/07/92
5,128,742                   07/181,632                   07/07/92
5,128,749                   07/681,775                   07/07/92
5,128,750                   07/552,297                   07/07/92
5,128,764                   07/586,873                   07/07/92
5,128,772                   07/590,134                   07/07/92
5,128,775                   07/634,669                   07/07/92
5,128,781                   07/585,781                   07/07/92
5,128,795                   07/566,165                   07/07/92
5,128,796                   07/613,188                   07/07/92
5,128,798                   07/652,839                   07/07/92
5,128,811                   07/271,139                   07/07/92
5,128,817                   07/570,111                   07/07/92
5,128,826                   07/450,076                   07/07/92
5,128,830                   07/547,739                   07/07/92
5,128,832                   07/603,219                   07/07/92
5,128,835                   07/576,339                   07/07/92
5,128,837                   07/759,926                   07/07/92
5,128,840                   07/548,862                   07/07/92
5,128,846                   07/602,036                   07/07/92
5,128,848                   07/501,615                   07/07/92
5,128,852                   07/689,540                   07/07/92
5,128,853                   07/652,423                   07/07/92
5,128,869                   07/400,114                   07/07/92
5,128,887                   07/648,669                   07/07/92
5,128,889                   07/659,198                   07/07/92
5,128,893                   07/498,662                   07/07/92
5,128,913                   07/533,305                   07/07/92
5,128,915                   07/436,951                   07/07/92
5,128,917                   07/415,300                   07/07/92
5,128,920                   07/343,306                   07/07/92
5,128,927                   07/518,889                   07/07/92
5,128,933                   07/259,136                   07/07/92
5,128,948                   07/674,972                   07/07/92
5,128,962                   07/523,784                   07/07/92
5,128,968                   07/385,469                   07/07/92
5,128,982                   07/516,344                   07/07/92
5,129,003                   07/571,409                   07/07/92
5,129,005                   07/379,824                   07/07/92
5,129,012                   07/496,931                   07/07/92
5,129,018                   07/682,316                   07/07/92
5,129,019                   07/580,921                   07/07/92
5,129,024                   07/746,945                   07/07/92
5,129,029                   07/738,305                   07/07/92
5,129,034                   07/447,637                   07/07/92
5,129,040                   07/546,377                   07/07/92
5,129,043                   07/393,526                   07/07/92
5,129,056                   07/466,152                   07/07/92
5,129,057                   07/689,082                   07/07/92
5,129,064                   07/576,081                   07/07/92
5,129,066                   07/387,412                   07/07/92
5,129,071                   07/331,756                   07/07/92
5,129,073                   07/759,640                   07/07/92
5,129,076                   07/325,578                   07/07/92

                     PATENTS WHICH EXPIRED ON July 9, 2000
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,533,207                   08/406,537                   07/09/96
5,533,208                   08/442,679                   07/09/96
5,533,212                   08/269,642                   07/09/96
5,533,218                   08/363,407                   07/09/96
5,533,223                   08/436,092                   07/09/96
5,533,229                   08/300,712                   07/09/96
5,533,231                   08/304,121                   07/09/96
5,533,234                   08/332,070                   07/09/96
5,533,238                   08/331,695                   07/09/96
5,533,239                   08/363,947                   07/09/96
5,533,240                   08/170,795                   07/09/96
5,533,245                   08/324,785                   07/09/96
5,533,248                   08/371,399                   07/09/96
5,533,254                   08/513,164                   07/09/96
5,533,255                   08/361,235                   07/09/96
5,533,272                   08/375,719                   07/09/96
5,533,275                   08/322,105                   07/09/96
5,533,290                   08/158,440                   07/09/96
5,533,291                   08/370,199                   07/09/96
5,533,294                   08/433,720                   07/09/96
5,533,297                   08/205,786                   07/09/96
5,533,302                   08/278,247                   07/09/96
5,533,305                   08/298,045                   07/09/96
5,533,308                   08/504,754                   07/09/96
5,533,314                   08/302,790                   07/09/96
5,533,315                   08/522,732                   07/09/96
5,533,318                   08/388,481                   07/09/96
5,533,327                   08/234,569                   07/09/96
5,533,333                   08/236,597                   07/09/96
5,533,335                   08/334,607                   07/09/96
5,533,349                   08/357,931                   07/09/96
5,533,350                   08/357,928                   07/09/96
5,533,357                   08/393,147                   07/09/96
5,533,358                   08/203,367                   07/09/96
5,533,367                   08/427,890                   07/09/96
5,533,376                   08/293,053                   07/09/96
5,533,380                   08/438,409                   07/09/96
5,533,382                   08/468,422                   07/09/96
5,533,385                   08/383,949                   07/09/96
5,533,387                   08/528,007                   07/09/96
5,533,414                   08/446,306                   07/09/96
5,533,418                   08/353,460                   07/09/96
5,533,419                   08/408,898                   07/09/96
5,533,420                   08/246,628                   07/09/96
5,533,424                   08/234,874                   07/09/96
5,533,428                   08/343,238                   07/09/96
5,533,430                   08/288,818                   07/09/96
5,533,434                   08/256,227                   07/09/96
5,533,453                   08/235,143                   07/09/96
5,533,463                   08/321,809                   07/09/96
5,533,464                   08/263,525                   07/09/96
5,533,466                   08/262,139                   07/09/96
5,533,467                   08/417,099                   07/09/96
5,533,470                   08/233,317                   07/09/96
5,533,479                   08/507,261                   07/09/96
5,533,480                   08/484,167                   07/09/96
5,533,493                   08/119,208                   07/09/96
5,533,500                   07/845,970                   07/09/96
5,533,504                   08/304,931                   07/09/96
5,533,514                   08/437,701                   07/09/96
5,533,523                   08/442,197                   07/09/96
5,533,524                   08/527,105                   07/09/96
5,533,526                   08/392,500                   07/09/96
5,533,528                   08/175,990                   07/09/96
5,533,533                   08/375,401                   07/09/96
5,533,536                   08/401,238                   07/09/96
5,533,537                   08/453,650                   07/09/96
5,533,541                   08/442,096                   07/09/96
5,533,542                   08/211,733                   07/09/96
5,533,546                   08/107,770                   07/09/96
5,533,554                   08/446,458                   07/09/96
5,533,558                   08/415,513                   07/09/96
5,533,561                   07/976,002                   07/09/96
5,533,563                   08/413,513                   07/09/96
5,533,566                   07/950,861                   07/09/96
5,533,572                   08/370,689                   07/09/96
5,533,580                   08/449,994                   07/09/96
5,533,587                   08/265,866                   07/09/96
5,533,588                   08/323,342                   07/09/96
5,533,589                   08/419,025                   07/09/96
5,533,591                   08/399,834                   07/09/96
5,533,599                   08/196,142                   07/09/96
5,533,600                   08/227,550                   07/09/96
5,533,601                   08/502,193                   07/09/96
5,533,603                   08/399,068                   07/09/96
5,533,607                   08/408,908                   07/09/96
5,533,609                   08/408,339                   07/09/96
5,533,614                   08/294,756                   07/09/96
5,533,616                   08/375,725                   07/09/96
5,533,617                   08/332,132                   07/09/96
5,533,621                   08/439,161                   07/09/96
5,533,630                   08/404,611                   07/09/96
5,533,632                   08/294,900                   07/09/96
5,533,639                   08/423,936                   07/09/96
5,533,646                   08/285,149                   07/09/96
5,533,647                   08/547,360                   07/09/96
5,533,649                   08/356,271                   07/09/96
5,533,651                   08/353,889                   07/09/96
5,533,654                   08/184,834                   07/09/96
5,533,655                   08/312,060                   07/09/96
5,533,668                   08/432,609                   07/09/96
5,533,670                   08/416,982                   07/09/96
5,533,674                   08/269,108                   07/09/96
5,533,676                   08/344,998                   07/09/96
5,533,680                   08/364,955                   07/09/96
5,533,685                   08/355,523                   07/09/96
5,533,689                   08/257,541                   07/09/96
5,533,698                   08/333,476                   07/09/96
5,533,699                   08/349,656                   07/09/96
5,533,700                   08/389,255                   07/09/96
5,533,702                   08/241,616                   07/09/96
5,533,706                   08/178,266                   07/09/96
5,533,710                   08/402,122                   07/09/96
5,533,711                   08/238,327                   07/09/96
5,533,713                   08/388,577                   07/09/96
5,533,715                   08/293,070                   07/09/96
5,533,716                   08/367,817                   07/09/96
5,533,718                   08/418,856                   07/09/96
5,533,722                   08/251,214                   07/09/96
5,533,728                   08/453,178                   07/09/96
5,533,729                   08/414,786                   07/09/96
5,533,732                   08/499,106                   07/09/96
5,533,734                   08/526,367                   07/09/96
5,533,735                   08/496,495                   07/09/96
5,533,738                   08/497,151                   07/09/96
5,533,740                   08/518,813                   07/09/96
5,533,758                   08/423,773                   07/09/96
5,533,762                   08/381,993                   07/09/96
5,533,771                   08/368,851                   07/09/96
5,533,774                   08/415,246                   07/09/96
5,533,778                   08/168,227                   07/09/96
5,533,790                   08/232,107                   07/09/96
5,533,796                   08/290,612                   07/09/96
5,533,797                   08/306,103                   07/09/96
5,533,799                   08/384,025                   07/09/96
5,533,806                   08/444,549                   07/09/96
5,533,810                   08/272,671                   07/09/96
5,533,815                   08/109,364                   07/09/96
5,533,824                   08/277,252                   07/09/96
5,533,830                   08/256,893                   07/09/96
5,533,832                   07/896,101                   07/09/96
5,533,833                   08/253,979                   07/09/96
5,533,834                   08/211,249                   07/09/96
5,533,838                   08/421,516                   07/09/96
5,533,839                   08/332,358                   07/09/96
5,533,841                   08/363,671                   07/09/96
5,533,855                   08/204,314                   07/09/96
5,533,861                   08/386,234                   07/09/96
5,533,865                   08/319,107                   07/09/96
5,533,867                   08/233,072                   07/09/96
5,533,870                   08/256,429                   07/09/96
5,533,879                   08/419,466                   07/09/96
5,533,880                   08/271,053                   07/09/96
5,533,887                   08/233,273                   07/09/96
5,533,896                   08/182,193                   07/09/96
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