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

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

                  PATENTS WHICH EXPIRED ON November 25, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,624,016                   06/654,656                   11/25/86
4,624,026                   06/416,659                   11/25/86
4,624,034                   06/790,213                   11/25/86
4,624,036                   06/695,474                   11/25/86
4,624,041                   06/789,620                   11/25/86
4,624,044                   06/653,917                   11/25/86
4,624,045                   06/716,604                   11/25/86
4,624,046                   06/770,355                   11/25/86
4,624,047                   06/659,962                   11/25/86
4,624,057                   06/763,017                   11/25/86
4,624,064                   06/837,896                   11/25/86
4,624,072                   06/722,514                   11/25/86
4,624,078                   06/660,281                   11/25/86
4,624,086                   06/678,254                   11/25/86
4,624,088                   06/769,688                   11/25/86
4,624,110                   06/735,126                   11/25/86
4,624,118                   06/621,366                   11/25/86
4,624,120                   06/777,359                   11/25/86
4,624,128                   06/746,086                   11/25/86
4,624,136                   06/718,111                   11/25/86
4,624,141                   06/719,074                   11/25/86
4,624,143                   06/755,287                   11/25/86
4,624,145                   06/716,288                   11/25/86
4,624,153                   06/561,066                   11/25/86
4,624,158                   06/711,548                   11/25/86
4,624,163                   06/776,513                   11/25/86
4,624,165                   06/653,918                   11/25/86
4,624,173                   06/506,430                   11/25/86
4,624,177                   06/741,554                   11/25/86
4,624,182                   06/633,121                   11/25/86
4,624,186                   06/854,770                   11/25/86
4,624,198                   06/794,304                   11/25/86
4,624,199                   06/827,096                   11/25/86
4,624,200                   06/745,326                   11/25/86
4,624,209                   06/614,060                   11/25/86
4,624,217                   06/728,419                   11/25/86
4,624,221                   06/780,934                   11/25/86
4,624,227                   06/772,906                   11/25/86
4,624,241                   06/763,207                   11/25/86
4,624,244                   06/692,579                   11/25/86
4,624,247                   06/812,008                   11/25/86
4,624,248                   06/720,585                   11/25/86
4,624,251                   06/650,096                   11/25/86
4,624,255                   06/734,389                   11/25/86
4,624,267                   06/735,263                   11/25/86
4,624,275                   06/750,549                   11/25/86
4,624,284                   06/693,756                   11/25/86
4,624,289                   06/790,654                   11/25/86
4,624,295                   06/735,685                   11/25/86
4,624,297                   06/780,004                   11/25/86
4,624,301                   06/636,484                   11/25/86
4,624,312                   06/617,426                   11/25/86
4,624,316                   06/655,979                   11/25/86
4,624,330                   06/758,912                   11/25/86
4,624,333                   06/645,590                   11/25/86
4,624,335                   06/660,154                   11/25/86
4,624,338                   06/697,321                   11/25/86
4,624,346                   06/630,169                   11/25/86
4,624,348                   06/306,574                   11/25/86
4,624,350                   06/649,447                   11/25/86
4,624,352                   06/759,810                   11/25/86
4,624,362                   06/698,719                   11/25/86
4,624,367                   06/602,533                   11/25/86
4,624,369                   06/640,750                   11/25/86
4,624,378                   06/736,176                   11/25/86
4,624,393                   06/279,956                   11/25/86
4,624,399                   06/713,717                   11/25/86
4,624,400                   06/544,029                   11/25/86
4,624,404                   06/681,020                   11/25/86
4,624,408                   06/701,732                   11/25/86
4,624,411                   06/689,738                   11/25/86
4,624,413                   06/694,101                   11/25/86
4,624,415                   06/718,144                   11/25/86
4,624,416                   06/716,591                   11/25/86
4,624,428                   06/652,546                   11/25/86
4,624,429                   06/655,625                   11/25/86
4,624,430                   06/742,696                   11/25/86
4,624,437                   06/688,918                   11/25/86
4,624,439                   06/357,649                   11/25/86
4,624,455                   06/622,866                   11/25/86
4,624,457                   06/270,334                   11/25/86
4,624,465                   06/769,028                   11/25/86
4,624,473                   06/678,562                   11/25/86
4,624,474                   06/658,916                   11/25/86
4,624,482                   06/630,876                   11/25/86
4,624,490                   06/535,509                   11/25/86
4,624,493                   06/781,365                   11/25/86
4,624,498                   06/734,820                   11/25/86
4,624,499                   06/718,716                   11/25/86
4,624,506                   06/748,782                   11/25/86
4,624,508                   06/637,719                   11/25/86
4,624,511                   06/747,633                   11/25/86
4,624,534                   06/626,790                   11/25/86
4,624,537                   06/642,758                   11/25/86
4,624,541                   06/664,973                   11/25/86
4,624,545                   06/542,034                   11/25/86
4,624,552                   06/735,133                   11/25/86
4,624,565                   06/648,758                   11/25/86
4,624,567                   06/599,007                   11/25/86
4,624,568                   06/722,232                   11/25/86
4,624,569                   06/514,875                   11/25/86
4,624,574                   06/607,805                   11/25/86
4,624,582                   06/584,840                   11/25/86
4,624,584                   06/619,990                   11/25/86
4,624,587                   06/669,263                   11/25/86
4,624,598                   06/766,597                   11/25/86
4,624,613                   06/664,210                   11/25/86
4,624,619                   06/646,768                   11/25/86
4,624,622                   06/554,075                   11/25/86
4,624,631                   06/721,711                   11/25/86
4,624,634                   06/698,639                   11/25/86
4,624,636                   06/596,882                   11/25/86
4,624,640                   06/668,737                   11/25/86
4,624,641                   06/663,226                   11/25/86
4,624,642                   06/713,179                   11/25/86
4,624,655                   06/684,936                   11/25/86
4,624,660                   06/782,697                   11/25/86
4,624,663                   06/613,557                   11/25/86
4,624,666                   06/632,754                   11/25/86
4,624,677                   06/657,119                   11/25/86
4,624,678                   06/728,356                   11/25/86
4,624,679                   06/688,490                   11/25/86
4,624,683                   06/736,886                   11/25/86
4,624,690                   06/750,335                   11/25/86
4,624,692                   06/805,848                   11/25/86
4,624,699                   06/717,087                   11/25/86
4,624,703                   06/821,932                   11/25/86
4,624,704                   06/783,285                   11/25/86
4,624,705                   06/848,162                   11/25/86
4,624,709                   06/540,646                   11/25/86
4,624,711                   06/669,284                   11/25/86
4,624,718                   06/796,469                   11/25/86
4,624,725                   06/692,456                   11/25/86
4,624,727                   06/766,628                   11/25/86
4,624,732                   06/715,631                   11/25/86
4,624,734                   06/662,762                   11/25/86
4,624,740                   06/693,698                   11/25/86
4,624,741                   06/808,798                   11/25/86
4,624,756                   06/831,502                   11/25/86
4,624,768                   06/695,006                   11/25/86
4,624,773                   06/647,193                   11/25/86
4,624,775                   06/663,495                   11/25/86
4,624,777                   06/671,671                   11/25/86
4,624,784                   06/679,613                   11/25/86
4,624,789                   06/713,252                   11/25/86
4,624,811                   06/782,314                   11/25/86
4,624,823                   06/625,896                   11/25/86
4,624,825                   06/518,326                   11/25/86
4,624,827                   06/633,774                   11/25/86
4,624,833                   06/674,771                   11/25/86
4,624,839                   06/702,961                   11/25/86
4,624,844                   06/697,662                   11/25/86
4,624,845                   06/582,332                   11/25/86
4,624,848                   06/608,756                   11/25/86
4,624,849                   06/667,678                   11/25/86
4,624,851                   06/714,359                   11/25/86
4,624,854                   06/768,569                   11/25/86
4,624,859                   06/758,223                   11/25/86
4,624,861                   06/772,811                   11/25/86
4,624,866                   06/686,941                   11/25/86
4,624,868                   06/781,187                   11/25/86
4,624,875                   06/624,009                   11/25/86
4,624,879                   06/667,940                   11/25/86
4,624,880                   06/713,574                   11/25/86
4,624,890                   06/793,068                   11/25/86
4,624,892                   06/750,173                   11/25/86
4,624,893                   06/700,173                   11/25/86
4,624,901                   06/720,202                   11/25/86
4,624,905                   06/640,314                   11/25/86
4,624,933                   06/811,382                   11/25/86
4,624,934                   06/729,066                   11/25/86
4,624,936                   06/714,150                   11/25/86
4,624,946                   06/760,955                   11/25/86
4,624,949                   06/835,946                   11/25/86
4,624,956                   06/680,566                   11/25/86
4,624,958                   06/770,328                   11/25/86
4,624,971                   06/693,719                   11/25/86
4,624,975                   06/778,587                   11/25/86
4,624,979                   06/675,715                   11/25/86
4,624,984                   06/782,313                   11/25/86
4,624,988                   06/789,758                   11/25/86
4,624,991                   06/747,391                   11/25/86
4,624,999                   06/760,027                   11/25/86
4,625,006                   06/668,697                   11/25/86
4,625,013                   06/684,392                   11/25/86
4,625,014                   06/629,363                   11/25/86
4,625,019                   06/552,148                   11/25/86
4,625,042                   06/752,439                   11/25/86
4,625,048                   06/684,412                   11/25/86
4,625,055                   06/741,030                   11/25/86
4,625,061                   06/708,844                   11/25/86
4,625,074                   06/708,084                   11/25/86
4,625,086                   06/737,450                   11/25/86
4,625,093                   06/822,915                   11/25/86
4,625,096                   06/656,756                   11/25/86
4,625,097                   06/674,316                   11/25/86
4,625,099                   06/736,108                   11/25/86
4,625,107                   06/583,251                   11/25/86
4,625,123                   06/654,631                   11/25/86
4,625,128                   06/779,004                   11/25/86
4,625,131                   06/590,095                   11/25/86
4,625,137                   06/678,482                   11/25/86
4,625,138                   06/823,975                   11/25/86
4,625,142                   06/477,106                   11/25/86
4,625,145                   06/657,318                   11/25/86
4,625,147                   06/627,760                   11/25/86
4,625,154                   06/760,546                   11/25/86
4,625,165                   06/558,955                   11/25/86
4,625,171                   06/579,967                   11/25/86
4,625,177                   06/658,681                   11/25/86
4,625,180                   06/813,139                   11/25/86
4,625,184                   06/508,397                   11/25/86
4,625,185                   06/590,363                   11/25/86
4,625,194                   06/766,166                   11/25/86
4,625,215                   06/628,200                   11/25/86
4,625,217                   06/628,357                   11/25/86
4,625,218                   06/791,066                   11/25/86
4,625,230                   06/605,967                   11/25/86
4,625,234                   06/532,106                   11/25/86
4,625,237                   06/663,153                   11/25/86
4,625,245                   06/669,357                   11/25/86
4,625,254                   06/620,955                   11/25/86
4,625,256                   06/616,213                   11/25/86
4,625,264                   06/700,418                   11/25/86
4,625,274                   06/611,252                   11/25/86
4,625,286                   06/373,960                   11/25/86
4,625,287                   06/541,029                   11/25/86
4,625,288                   06/656,611                   11/25/86
4,625,295                   06/456,989                   11/25/86
4,625,300                   06/741,205                   11/25/86
4,625,308                   06/445,501                   11/25/86
4,625,309                   06/548,499                   11/25/86
4,625,316                   06/661,549                   11/25/86
4,625,318                   06/703,798                   11/25/86
4,625,323                   06/533,113                   11/25/86
4,625,327                   06/487,390                   11/25/86
4,625,330                   06/562,787                   11/25/86

                  PATENTS WHICH EXPIRED ON November 20, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

4,970,731                   07/357,754                   11/20/90
4,970,734                   07/248,622                   11/20/90
4,970,735                   07/508,684                   11/20/90
4,970,741                   07/503,294                   11/20/90
4,970,745                   07/377,234                   11/20/90
4,970,747                   07/349,514                   11/20/90
4,970,749                   07/349,592                   11/20/90
4,970,752                   07/505,664                   11/20/90
4,970,755                   07/454,913                   11/20/90
4,970,758                   07/463,768                   11/20/90
4,970,764                   07/195,242                   11/20/90
4,970,769                   07/339,739                   11/20/90
4,970,770                   07/403,029                   11/20/90
4,970,771                   07/390,533                   11/20/90
4,970,775                   07/490,536                   11/20/90
4,970,784                   07/401,020                   11/20/90
4,970,791                   07/402,621                   11/20/90
4,970,796                   07/395,074                   11/20/90
4,970,798                   07/468,662                   11/20/90
4,970,801                   07/343,831                   11/20/90
4,970,803                   07/459,480                   11/20/90
4,970,812                   07/421,638                   11/20/90
4,970,820                   07/431,214                   11/20/90
4,970,831                   07/301,757                   11/20/90
4,970,834                   07/357,412                   11/20/90
4,970,835                   07/362,202                   11/20/90
4,970,837                   07/468,861                   11/20/90
4,970,842                   07/160,878                   11/20/90
4,970,850                   07/378,373                   11/20/90
4,970,854                   07/376,760                   11/20/90
4,970,861                   07/432,638                   11/20/90
4,970,866                   07/447,068                   11/20/90
4,970,869                   07/436,985                   11/20/90
4,970,874                   07/369,649                   11/20/90
4,970,878                   07/438,114                   11/20/90
4,970,882                   07/440,223                   11/20/90
4,970,885                   07/364,869                   11/20/90
4,970,889                   07/351,679                   11/20/90
4,970,893                   07/485,602                   11/20/90
4,970,894                   07/427,297                   11/20/90
4,970,906                   07/513,020                   11/20/90
4,970,907                   07/253,276                   11/20/90
4,970,917                   07/357,990                   11/20/90
4,970,919                   07/410,367                   11/20/90
4,970,929                   07/491,269                   11/20/90
4,970,937                   07/354,416                   11/20/90
4,970,941                   07/449,041                   11/20/90
4,970,944                   06/699,331                   11/20/90
4,970,946                   07/482,208                   11/20/90
4,970,968                   07/462,071                   11/20/90
4,970,970                   07/371,198                   11/20/90
4,970,971                   07/420,383                   11/20/90
4,970,976                   07/440,840                   11/20/90
4,970,978                   07/323,886                   11/20/90
4,970,979                   07/391,547                   11/20/90
4,970,982                   07/351,396                   11/20/90
4,970,986                   07/469,986                   11/20/90
4,970,987                   07/423,989                   11/20/90
4,971,004                   07/398,177                   11/20/90
4,971,018                   07/188,304                   11/20/90
4,971,020                   07/320,325                   11/20/90
4,971,021                   07/223,802                   11/20/90
4,971,024                   07/475,991                   11/20/90
4,971,025                   07/450,498                   11/20/90
4,971,037                   07/246,350                   11/20/90
4,971,039                   07/112,562                   11/20/90
4,971,041                   07/422,677                   11/20/90
4,971,042                   07/425,739                   11/20/90
4,971,045                   07/452,005                   11/20/90
4,971,053                   07/351,178                   11/20/90
4,971,062                   07/329,579                   11/20/90
4,971,067                   07/190,490                   11/20/90
4,971,070                   07/279,755                   11/20/90
4,971,072                   07/350,397                   11/20/90
4,971,073                   07/369,379                   11/20/90
4,971,081                   07/465,479                   11/20/90
4,971,089                   07/288,488                   11/20/90
4,971,091                   07/421,518                   11/20/90
4,971,097                   07/414,452                   11/20/90
4,971,102                   07/396,511                   11/20/90
4,971,116                   07/430,413                   11/20/90
4,971,125                   07/372,827                   11/20/90
4,971,133                   07/332,183                   11/20/90
4,971,135                   07/325,553                   11/20/90
4,971,136                   07/441,977                   11/20/90
4,971,139                   07/473,065                   11/20/90
4,971,140                   07/455,529                   11/20/90
4,971,144                   07/358,031                   11/20/90
4,971,147                   07/329,150                   11/20/90
4,971,150                   07/419,997                   11/20/90
4,971,152                   07/391,967                   11/20/90
4,971,155                   07/092,557                   11/20/90
4,971,164                   07/307,946                   11/20/90
4,971,170                   07/453,917                   11/20/90
4,971,171                   07/324,222                   11/20/90
4,971,176                   07/328,178                   11/20/90
4,971,183                   07/255,738                   11/20/90
4,971,185                   07/293,250                   11/20/90
4,971,186                   07/337,910                   11/20/90
4,971,188                   07/202,825                   11/20/90
4,971,192                   07/420,444                   11/20/90
4,971,194                   07/455,926                   11/20/90
4,971,200                   07/419,200                   11/20/90
4,971,201                   07/330,610                   11/20/90
4,971,214                   07/367,826                   11/20/90
4,971,217                   07/350,948                   11/20/90
4,971,226                   07/446,372                   11/20/90
4,971,232                   07/502,699                   11/20/90
4,971,234                   07/464,336                   11/20/90
4,971,246                   07/341,858                   11/20/90
4,971,249                   07/417,019                   11/20/90
4,971,256                   07/253,235                   11/20/90
4,971,257                   07/441,515                   11/20/90
4,971,258                   07/378,531                   11/20/90
4,971,261                   07/369,841                   11/20/90
4,971,262                   07/405,451                   11/20/90
4,971,264                   07/102,815                   11/20/90
4,971,265                   07/239,286                   11/20/90
4,971,270                   07/465,287                   11/20/90
4,971,271                   07/347,665                   11/20/90
4,971,273                   07/438,112                   11/20/90
4,971,275                   07/385,215                   11/20/90
4,971,276                   07/407,547                   11/20/90
4,971,282                   07/399,001                   11/20/90
4,971,293                   07/319,736                   11/20/90
4,971,296                   07/225,373                   11/20/90
4,971,299                   07/381,068                   11/20/90
4,971,303                   07/340,851                   11/20/90
4,971,311                   07/247,951                   11/20/90
4,971,314                   07/356,870                   11/20/90
4,971,315                   07/266,855                   11/20/90
4,971,317                   07/427,782                   11/20/90
4,971,319                   07/495,100                   11/20/90
4,971,321                   07/329,364                   11/20/90
4,971,323                   07/392,050                   11/20/90
4,971,325                   07/493,579                   11/20/90
4,971,328                   07/464,469                   11/20/90
4,971,329                   07/448,675                   11/20/90
4,971,332                   07/324,274                   11/20/90
4,971,346                   07/322,407                   11/20/90
4,971,347                   07/344,092                   11/20/90
4,971,348                   07/290,851                   11/20/90
4,971,352                   07/399,816                   11/20/90
4,971,353                   07/432,901                   11/20/90
4,971,355                   07/398,523                   11/20/90
4,971,356                   07/335,737                   11/20/90
4,971,363                   07/466,075                   11/20/90
4,971,364                   07/451,774                   11/20/90
4,971,371                   07/387,084                   11/20/90
4,971,374                   07/318,632                   11/20/90
4,971,375                   07/467,013                   11/20/90
4,971,383                   07/430,322                   11/20/90
4,971,384                   07/438,237                   11/20/90
4,971,388                   07/464,979                   11/20/90
4,971,397                   07/356,469                   11/20/90
4,971,399                   07/432,004                   11/20/90
4,971,403                   07/391,051                   11/20/90
4,971,425                   07/225,817                   11/20/90
4,971,431                   07/258,906                   11/20/90
4,971,436                   07/443,533                   11/20/90
4,971,437                   06/890,208                   11/20/90
4,971,438                   07/319,136                   11/20/90
4,971,440                   07/447,792                   11/20/90
4,971,447                   07/314,083                   11/20/90
4,971,448                   07/362,532                   11/20/90
4,971,452                   07/481,693                   11/20/90
4,971,469                   07/472,585                   11/20/90
4,971,474                   07/503,410                   11/20/90
4,971,489                   07/465,380                   11/20/90
4,971,492                   07/346,516                   11/20/90
4,971,495                   07/356,222                   11/20/90
4,971,496                   07/262,488                   11/20/90
4,971,503                   07/468,067                   11/20/90
4,971,504                   07/415,070                   11/20/90
4,971,508                   07/484,438                   11/20/90
4,971,510                   07/293,103                   11/20/90
4,971,515                   07/275,043                   11/20/90
4,971,516                   07/391,673                   11/20/90
4,971,517                   07/292,612                   11/20/90
4,971,522                   07/350,545                   11/20/90
4,971,524                   07/486,219                   11/20/90
4,971,528                   07/319,167                   11/20/90
4,971,532                   07/360,265                   11/20/90
4,971,535                   07/318,258                   11/20/90
4,971,540                   07/288,162                   11/20/90
4,971,542                   07/325,633                   11/20/90
4,971,550                   07/414,904                   11/20/90
4,971,554                   07/238,055                   11/20/90
4,971,558                   07/175,096                   11/20/90
4,971,563                   07/386,502                   11/20/90
4,971,573                   07/246,399                   11/20/90
4,971,577                   07/404,459                   11/20/90
4,971,593                   07/431,823                   11/20/90
4,971,609                   07/475,433                   11/20/90
4,971,613                   07/382,249                   11/20/90
4,971,615                   07/439,610                   11/20/90
4,971,620                   07/302,253                   11/20/90
4,971,626                   07/406,985                   11/20/90
4,971,633                   07/412,711                   11/20/90
4,971,634                   07/384,765                   11/20/90
4,971,638                   07/405,367                   11/20/90
4,971,641                   07/490,506                   11/20/90
4,971,643                   07/401,467                   11/20/90
4,971,644                   07/448,743                   11/20/90
4,971,645                   07/400,886                   11/20/90
4,971,647                   07/327,215                   11/20/90
4,971,648                   07/436,461                   11/20/90
4,971,652                   07/451,685                   11/20/90
4,971,654                   07/229,262                   11/20/90
4,971,658                   07/363,153                   11/20/90
4,971,660                   07/255,854                   11/20/90
4,971,666                   07/506,807                   11/20/90
4,971,669                   07/300,672                   11/20/90
4,971,674                   07/345,678                   11/20/90
4,971,679                   07/419,277                   11/20/90
4,971,681                   07/406,475                   11/20/90
4,971,683                   07/498,516                   11/20/90
4,971,685                   07/336,168                   11/20/90
4,971,692                   07/283,481                   11/20/90
4,971,693                   07/404,953                   11/20/90
4,971,694                   07/293,855                   11/20/90
4,971,697                   07/314,752                   11/20/90
4,971,698                   07/304,432                   11/20/90
4,971,700                   07/180,952                   11/20/90
4,971,707                   07/200,873                   11/20/90
4,971,711                   07/294,521                   11/20/90
4,971,713                   07/313,049                   11/20/90
4,971,715                   07/272,847                   11/20/90
4,971,716                   07/425,654                   11/20/90
4,971,717                   07/344,934                   11/20/90
4,971,718                   07/223,369                   11/20/90
4,971,722                   07/248,930                   11/20/90
4,971,729                   07/462,943                   11/20/90
4,971,731                   07/444,727                   11/20/90
4,971,732                   07/244,598                   11/20/90
4,971,737                   07/332,660                   11/20/90
4,971,740                   07/188,372                   11/20/90
4,971,752                   07/465,518                   11/20/90
4,971,769                   07/395,852                   11/20/90
4,971,773                   07/020,375                   11/20/90
4,971,779                   07/312,881                   11/20/90
4,971,786                   07/285,603                   11/20/90
4,971,788                   07/303,479                   11/20/90
4,971,794                   06/933,358                   11/20/90
4,971,801                   07/057,344                   11/20/90
4,971,805                   07/255,199                   11/20/90
4,971,807                   07/387,651                   11/20/90
4,971,809                   07/353,362                   11/20/90
4,971,815                   07/377,124                   11/20/90
4,971,816                   07/311,857                   11/20/90
4,971,818                   07/359,743                   11/20/90
4,971,819                   07/467,433                   11/20/90
4,971,823                   07/375,536                   11/20/90
4,971,831                   07/508,078                   11/20/90
4,971,835                   07/235,037                   11/20/90
4,971,836                   07/449,477                   11/20/90
4,971,841                   07/363,561                   11/20/90
4,971,846                   07/397,362                   11/20/90
4,971,847                   07/360,625                   11/20/90
4,971,848                   06/338,133                   11/20/90
4,971,851                   06/798,779                   11/20/90
4,971,852                   07/016,048                   11/20/90
4,971,856                   07/218,005                   11/20/90
4,971,859                   07/310,546                   11/20/90
4,971,861                   07/138,109                   11/20/90
4,971,862                   07/338,477                   11/20/90
4,971,869                   07/367,965                   11/20/90
4,971,873                   07/429,950                   11/20/90
4,971,876                   07/466,581                   11/20/90
4,971,882                   07/288,318                   11/20/90
4,971,894                   07/309,575                   11/20/90
4,971,897                   07/305,591                   11/20/90
4,971,900                   07/171,499                   11/20/90
4,971,910                   07/226,071                   11/20/90
4,971,912                   07/073,050                   11/20/90
4,971,916                   07/312,430                   11/20/90
4,971,919                   07/321,056                   11/20/90
4,971,922                   07/358,491                   11/20/90
4,971,933                   07/323,633                   11/20/90
4,971,934                   07/397,587                   11/20/90
4,971,939                   07/338,198                   11/20/90
4,971,940                   07/382,477                   11/20/90
4,971,944                   07/313,125                   11/20/90
4,971,946                   07/204,519                   11/20/90
4,971,948                   07/305,230                   11/20/90
4,971,965                   07/344,391                   11/20/90
4,971,966                   07/080,716                   11/20/90
4,971,971                   07/399,331                   11/20/90
4,971,974                   07/207,652                   11/20/90
4,971,977                   07/437,453                   11/20/90
4,971,987                   07/164,758                   11/20/90
4,971,990                   07/301,354                   11/20/90
4,971,994                   07/336,398                   11/20/90
4,971,995                   07/301,706                   11/20/90
4,971,997                   07/390,567                   11/20/90
4,972,001                   07/494,021                   11/20/90
4,972,007                   07/282,166                   11/20/90
4,972,016                   07/494,948                   11/20/90
4,972,028                   07/315,654                   11/20/90
4,972,029                   07/325,429                   11/20/90
4,972,032                   07/383,268                   11/20/90
4,972,039                   07/405,811                   11/20/90
4,972,062                   07/356,992                   11/20/90
4,972,072                   07/467,314                   11/20/90
4,972,074                   07/335,833                   11/20/90
4,972,081                   07/009,520                   11/20/90
4,972,087                   07/331,641                   11/20/90
4,972,094                   07/146,229                   11/20/90
4,972,128                   07/425,136                   11/20/90
4,972,136                   07/432,832                   11/20/90
4,972,144                   07/442,266                   11/20/90
4,972,146                   07/347,778                   11/20/90
4,972,149                   06/890,209                   11/20/90
4,972,158                   07/429,669                   11/20/90
4,972,168                   07/476,125                   11/20/90
4,972,169                   07/384,562                   11/20/90
4,972,172                   07/364,095                   11/20/90
4,972,179                   07/385,187                   11/20/90
4,972,184                   07/304,611                   11/20/90
4,972,193                   07/464,595                   11/20/90
4,972,194                   07/253,108                   11/20/90
4,972,203                   07/442,202                   11/20/90
4,972,207                   07/369,400                   11/20/90
4,972,220                   07/431,919                   11/20/90
4,972,228                   07/417,493                   11/20/90
4,972,232                   07/402,397                   11/20/90
4,972,237                   07/362,224                   11/20/90
4,972,242                   07/418,608                   11/20/90
4,972,248                   07/351,173                   11/20/90
4,972,250                   07/020,920                   11/20/90
4,972,252                   07/442,406                   11/20/90
4,972,255                   07/265,768                   11/20/90
4,972,258                   07/385,563                   11/20/90
4,972,262                   07/263,309                   11/20/90
4,972,263                   07/364,337                   11/20/90
4,972,274                   07/164,271                   11/20/90
4,972,278                   07/256,905                   11/20/90
4,972,280                   07/312,633                   11/20/90
4,972,291                   07/384,288                   11/20/90
4,972,294                   07/332,085                   11/20/90
4,972,305                   07/399,025                   11/20/90
4,972,315                   07/166,524                   11/20/90
4,972,332                   07/308,909                   11/20/90
4,972,339                   07/493,950                   11/20/90
4,972,342                   07/254,985                   11/20/90
4,972,345                   07/294,456                   11/20/90
4,972,352                   07/390,879                   11/20/90
4,972,354                   07/209,294                   11/20/90
4,972,358                   07/363,238                   11/20/90
4,972,363                   07/305,962                   11/20/90
4,972,369                   07/432,327                   11/20/90
4,972,370                   07/398,271                   11/20/90
4,972,372                   07/221,480                   11/20/90
4,972,375                   07/397,838                   11/20/90
4,972,376                   07/268,499                   11/20/90
4,972,391                   07/473,232                   11/20/90
4,972,392                   07/364,070                   11/20/90
4,972,396                   07/261,678                   11/20/90
4,972,398                   07/173,601                   11/20/90
4,972,403                   07/318,029                   11/20/90
4,972,422                   07/408,537                   11/20/90
4,972,427                   07/407,206                   11/20/90
4,972,434                   07/324,571                   11/20/90
4,972,449                   07/495,890                   11/20/90
4,972,476                   07/350,220                   11/20/90
4,972,483                   07/248,379                   11/20/90
4,972,497                   07/280,877                   11/20/90
4,972,505                   07/280,488                   11/20/90
4,972,507                   07/242,958                   11/20/90
4,972,509                   07/368,827                   11/20/90
4,972,511                   07/280,057                   11/20/90

                  PATENTS WHICH EXPIRED ON November 22, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,365,610                   08/100,768                   11/22/94
5,365,612                   08/021,156                   11/22/94
5,365,615                   08/003,288                   11/22/94
5,365,619                   08/194,003                   11/22/94
5,365,620                   08/096,294                   11/22/94
5,365,621                   07/946,758                   11/22/94
5,365,623                   08/113,278                   11/22/94
5,365,624                   08/025,277                   11/22/94
5,365,626                   08/032,116                   11/22/94
5,365,628                   08/168,042                   11/22/94
5,365,631                   08/089,322                   11/22/94
5,365,633                   07/687,016                   11/22/94
5,365,634                   08/056,750                   11/22/94
5,365,639                   07/957,679                   11/22/94
5,365,640                   08/026,581                   11/22/94
5,365,646                   08/036,468                   11/22/94
5,365,647                   08/199,442                   11/22/94
5,365,651                   08/086,249                   11/22/94
5,365,652                   08/157,697                   11/22/94
5,365,653                   08/100,974                   11/22/94
5,365,668                   07/934,490                   11/22/94
5,365,670                   08/202,663                   11/22/94
5,365,675                   08/226,269                   11/22/94
5,365,676                   08/101,594                   11/22/94
5,365,677                   07/906,702                   11/22/94
5,365,681                   08/000,907                   11/22/94
5,365,683                   07/905,272                   11/22/94
5,365,685                   08/045,619                   11/22/94
5,365,686                   07/901,014                   11/22/94
5,365,688                   08/086,107                   11/22/94
5,365,689                   08/175,235                   11/22/94
5,365,692                   08/057,632                   11/22/94
5,365,696                   08/221,199                   11/22/94
5,365,699                   07/925,525                   11/22/94
5,365,708                   08/021,045                   11/22/94
5,365,712                   07/949,844                   11/22/94
5,365,715                   08/149,080                   11/22/94
5,365,718                   08/030,961                   11/22/94
5,365,723                   07/948,483                   11/22/94
5,365,726                   08/183,014                   11/22/94
5,365,727                   08/102,893                   11/22/94
5,365,728                   08/050,904                   11/22/94
5,365,739                   08/196,529                   11/22/94
5,365,754                   07/748,426                   11/22/94
5,365,758                   07/913,966                   11/22/94
5,365,761                   07/960,456                   11/22/94
5,365,766                   08/062,759                   11/22/94
5,365,806                   08/096,892                   11/22/94
5,365,807                   08/081,809                   11/22/94
5,365,808                   08/158,453                   11/22/94
5,365,813                   07/957,655                   11/22/94
5,365,822                   08/121,918                   11/22/94
5,365,825                   08/230,229                   11/22/94
5,365,831                   08/117,225                   11/22/94
5,365,833                   08/207,060                   11/22/94
5,365,834                   08/063,671                   11/22/94
5,365,837                   08/092,520                   11/22/94
5,365,838                   08/017,457                   11/22/94
5,365,847                   08/125,622                   11/22/94
5,365,852                   07/294,448                   11/22/94
5,365,853                   08/195,501                   11/22/94
5,365,857                   08/038,001                   11/22/94
5,365,863                   08/184,863                   11/22/94
5,365,867                   08/113,429                   11/22/94
5,365,871                   07/996,591                   11/22/94
5,365,878                   08/137,350                   11/22/94
5,365,879                   08/215,537                   11/22/94
5,365,880                   08/227,735                   11/22/94
5,365,883                   08/127,177                   11/22/94
5,365,885                   08/012,738                   11/22/94
5,365,886                   08/020,346                   11/22/94
5,365,887                   07/874,649                   11/22/94
5,365,901                   08/151,831                   11/22/94
5,365,912                   07/959,140                   11/22/94
5,365,913                   08/093,758                   11/22/94
5,365,915                   08/071,964                   11/22/94
5,365,920                   07/743,327                   11/22/94
5,365,921                   08/007,909                   11/22/94
5,365,952                   08/032,306                   11/22/94
5,365,953                   07/781,209                   11/22/94
5,365,956                   08/179,389                   11/22/94
5,365,966                   07/871,000                   11/22/94
5,365,967                   08/145,158                   11/22/94
5,365,968                   08/035,753                   11/22/94
5,365,969                   08/184,569                   11/22/94
5,365,970                   08/045,032                   11/22/94
5,365,974                   07/962,240                   11/22/94
5,365,983                   08/118,059                   11/22/94
5,365,992                   07/895,088                   11/22/94
5,366,000                   08/025,264                   11/22/94
5,366,003                   08/025,938                   11/22/94
5,366,011                   08/164,271                   11/22/94
5,366,018                   08/106,441                   11/22/94
5,366,020                   08/046,429                   11/22/94
5,366,032                   08/074,774                   11/22/94
5,366,036                   08/006,469                   11/22/94
5,366,046                   08/017,194                   11/22/94
5,366,051                   07/875,354                   11/22/94
5,366,064                   08/168,872                   11/22/94
5,366,066                   08/070,323                   11/22/94
5,366,069                   08/139,458                   11/22/94
5,366,072                   08/167,320                   11/22/94
5,366,088                   08/115,467                   11/22/94
5,366,097                   08/040,882                   11/22/94
5,366,099                   08/190,662                   11/22/94
5,366,105                   08/149,388                   11/22/94
5,366,106                   07/986,604                   11/22/94
5,366,107                   08/007,971                   11/22/94
5,366,108                   08/151,927                   11/22/94
5,366,111                   08/097,070                   11/22/94
5,366,115                   08/078,549                   11/22/94
5,366,119                   08/072,842                   11/22/94
5,366,121                   07/844,942                   11/22/94
5,366,129                   07/993,042                   11/22/94
5,366,143                   08/153,527                   11/22/94
5,366,148                   08/026,608                   11/22/94
5,366,151                   08/173,240                   11/22/94
5,366,152                   08/133,228                   11/22/94
5,366,153                   08/214,686                   11/22/94
5,366,159                   07/928,858                   11/22/94
5,366,160                   08/207,610                   11/22/94
5,366,162                   08/046,098                   11/22/94
5,366,189                   08/130,268                   11/22/94
5,366,190                   08/011,723                   11/22/94
5,366,191                   07/836,829                   11/22/94
5,366,192                   07/957,829                   11/22/94
5,366,193                   07/961,930                   11/22/94
5,366,196                   07/897,935                   11/22/94
5,366,197                   08/056,310                   11/22/94
5,366,202                   08/090,375                   11/22/94
5,366,209                   08/070,873                   11/22/94
5,366,218                   07/952,067                   11/22/94
5,366,220                   08/073,048                   11/22/94
5,366,221                   08/099,931                   11/22/94
5,366,225                   08/231,743                   11/22/94
5,366,227                   08/228,707                   11/22/94
5,366,228                   08/267,229                   11/22/94
5,366,235                   07/991,956                   11/22/94
5,366,236                   07/925,991                   11/22/94
5,366,238                   08/037,611                   11/22/94
5,366,247                   08/058,216                   11/22/94
5,366,248                   08/109,360                   11/22/94
5,366,249                   07/961,441                   11/22/94
5,366,264                   08/131,311                   11/22/94
5,366,266                   08/137,349                   11/22/94
5,366,269                   07/932,816                   11/22/94
5,366,288                   08/117,078                   11/22/94
5,366,292                   07/473,588                   11/22/94
5,366,293                   08/163,302                   11/22/94
5,366,302                   08/143,378                   11/22/94
5,366,308                   08/074,623                   11/22/94
5,366,309                   08/087,299                   11/22/94
5,366,318                   08/108,537                   11/22/94
5,366,326                   08/138,998                   11/22/94
5,366,327                   08/015,231                   11/22/94
5,366,331                   08/015,990                   11/22/94
5,366,337                   07/949,527                   11/22/94
5,366,350                   08/226,818                   11/22/94
5,366,353                   08/223,936                   11/22/94
5,366,362                   07/941,336                   11/22/94
5,366,365                   07/893,386                   11/22/94
5,366,373                   08/164,559                   11/22/94
5,366,374                   08/063,532                   11/22/94
5,366,378                   08/057,183                   11/22/94
5,366,379                   07/792,494                   11/22/94
5,366,386                   08/093,869                   11/22/94
5,366,395                   07/985,170                   11/22/94
5,366,396                   08/090,068                   11/22/94
5,366,398                   08/069,163                   11/22/94
5,366,413                   08/026,197                   11/22/94
5,366,420                   08/047,753                   11/22/94
5,366,426                   08/147,967                   11/22/94
5,366,428                   08/212,936                   11/22/94
5,366,430                   08/195,646                   11/22/94
5,366,434                   07/973,051                   11/22/94
5,366,436                   07/711,079                   11/22/94
5,366,440                   08/004,079                   11/22/94
5,366,445                   08/039,910                   11/22/94
5,366,447                   08/165,174                   11/22/94
5,366,449                   08/033,159                   11/22/94
5,366,474                   07/929,282                   11/22/94
5,366,481                   08/181,822                   11/22/94
5,366,482                   08/024,075                   11/22/94
5,366,524                   08/152,629                   11/22/94
5,366,528                   08/147,999                   11/22/94
5,366,533                   08/165,786                   11/22/94
5,366,560                   08/116,405                   11/22/94
5,366,561                   08/058,543                   11/22/94
5,366,562                   07/923,876                   11/22/94
5,366,563                   07/997,054                   11/22/94
5,366,570                   08/025,223                   11/22/94
5,366,572                   08/065,173                   11/22/94
5,366,581                   07/885,851                   11/22/94
5,366,594                   07/877,752                   11/22/94
5,366,599                   08/034,119                   11/22/94
5,366,602                   07/448,940                   11/22/94
5,366,606                   08/063,943                   11/22/94
5,366,610                   07/458,469                   11/22/94
5,366,622                   07/762,301                   11/22/94
5,366,628                   08/022,210                   11/22/94
5,366,635                   08/185,676                   11/22/94
5,366,645                   07/883,072                   11/22/94
5,366,649                   08/076,680                   11/22/94
5,366,650                   08/105,955                   11/22/94
5,366,661                   07/892,326                   11/22/94
5,366,664                   07/878,153                   11/22/94
5,366,675                   08/204,855                   11/22/94
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