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 December 1, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue

4,709,423                   06/939,271                   12/01/87
4,709,427                   06/781,944                   12/01/87
4,709,429                   06/896,656                   12/01/87
4,709,433                   06/848,174                   12/01/87
4,709,440                   07/036,010                   12/01/87
4,709,444                   07/009,019                   12/01/87
4,709,456                   06/836,018                   12/01/87
4,709,457                   06/764,662                   12/01/87
4,709,468                   06/824,403                   12/01/87
4,709,469                   06/940,607                   12/01/87
4,709,471                   06/896,781                   12/01/87
4,709,482                   06/855,627                   12/01/87
4,709,485                   06/937,808                   12/01/87
4,709,491                   06/869,245                   12/01/87
4,709,503                   06/789,645                   12/01/87
4,709,509                   06/920,192                   12/01/87
4,709,512                   06/807,950                   12/01/87
4,709,525                   06/932,778                   12/01/87
4,709,528                   07/005,988                   12/01/87
4,709,534                   06/770,001                   12/01/87
4,709,546                   06/853,477                   12/01/87
4,709,548                   06/897,629                   12/01/87
4,709,550                   06/691,346                   12/01/87
4,709,557                   07/010,496                   12/01/87
4,709,560                   06/938,105                   12/01/87
4,709,569                   06/484,800                   12/01/87
4,709,570                   06/795,326                   12/01/87
4,709,589                   06/896,106                   12/01/87
4,709,594                   06/815,594                   12/01/87
4,709,595                   06/942,752                   12/01/87
4,709,609                   06/940,183                   12/01/87
4,709,617                   06/622,793                   12/01/87
4,709,621                   06/708,404                   12/01/87
4,709,631                   07/004,873                   12/01/87
4,709,636                   06/653,675                   12/01/87
4,709,640                   06/833,835                   12/01/87
4,709,669                   06/907,045                   12/01/87
4,709,672                   06/864,673                   12/01/87
4,709,673                   06/763,595                   12/01/87
4,709,679                   06/715,354                   12/01/87
4,709,692                   06/881,451                   12/01/87
4,709,702                   06/727,031                   12/01/87
4,709,705                   07/008,956                   12/01/87
4,709,716                   06/907,976                   12/01/87
4,709,717                   06/861,402                   12/01/87
4,709,718                   06/861,062                   12/01/87
4,709,719                   06/941,400                   12/01/87
4,709,727                   06/910,507                   12/01/87
4,709,729                   06/820,235                   12/01/87
4,709,730                   06/946,132                   12/01/87
4,709,733                   06/888,804                   12/01/87
4,709,746                   06/854,795                   12/01/87
4,709,754                   06/921,902                   12/01/87
4,709,755                   06/903,355                   12/01/87
4,709,759                   06/946,864                   12/01/87
4,709,764                   06/819,344                   12/01/87
4,709,773                   06/875,325                   12/01/87
4,709,775                   06/901,776                   12/01/87
4,709,777                   06/882,656                   12/01/87
4,709,779                   06/831,286                   12/01/87
4,709,782                   07/002,953                   12/01/87
4,709,784                   07/031,455                   12/01/87
4,709,790                   06/783,840                   12/01/87
4,709,793                   06/703,676                   12/01/87
4,709,800                   06/856,564                   12/01/87
4,709,803                   06/828,970                   12/01/87
4,709,811                   06/900,632                   12/01/87
4,709,813                   06/850,161                   12/01/87
4,709,818                   06/767,412                   12/01/87
4,709,819                   06/888,521                   12/01/87
4,709,820                   06/710,964                   12/01/87
4,709,821                   06/934,876                   12/01/87
4,709,828                   06/842,055                   12/01/87
4,709,829                   06/902,949                   12/01/87
4,709,834                   07/009,899                   12/01/87
4,709,846                   06/915,741                   12/01/87
4,709,862                   07/008,748                   12/01/87
4,709,865                   06/454,736                   12/01/87
4,709,870                   06/846,965                   12/01/87
4,709,872                   07/017,758                   12/01/87
4,709,874                   06/829,501                   12/01/87
4,709,875                   07/005,697                   12/01/87
4,709,879                   06/935,622                   12/01/87
4,709,880                   06/684,209                   12/01/87
4,709,887                   06/907,076                   12/01/87
4,709,889                   06/900,806                   12/01/87
4,709,900                   06/841,564                   12/01/87
4,709,906                   06/917,863                   12/01/87
4,709,908                   06/800,957                   12/01/87
4,709,921                   06/836,439                   12/01/87
4,709,925                   06/823,128                   12/01/87
4,709,930                   06/708,704                   12/01/87
4,709,931                   06/872,161                   12/01/87
4,709,932                   07/009,298                   12/01/87
4,709,944                   06/860,795                   12/01/87
4,709,956                   06/900,290                   12/01/87
4,709,961                   06/912,495                   12/01/87
4,709,968                   06/862,043                   12/01/87
4,709,976                   06/823,329                   12/01/87
4,709,996                   06/639,480                   12/01/87
4,710,013                   06/900,718                   12/01/87
4,710,020                   06/864,292                   12/01/87
4,710,022                   06/654,158                   12/01/87
4,710,035                   06/874,859                   12/01/87
4,710,046                   06/753,565                   12/01/87
4,710,050                   06/921,231                   12/01/87
4,710,051                   06/866,768                   12/01/87
4,710,054                   06/794,574                   12/01/87
4,710,055                   06/881,255                   12/01/87
4,710,059                   06/934,016                   12/01/87
4,710,064                   06/912,331                   12/01/87
4,710,066                   06/794,097                   12/01/87
4,710,078                   06/686,196                   12/01/87
4,710,085                   06/831,646                   12/01/87
4,710,091                   06/798,273                   12/01/87
4,710,099                   07/018,733                   12/01/87
4,710,106                   06/801,309                   12/01/87
4,710,109                   06/861,235                   12/01/87
4,710,116                   06/877,742                   12/01/87
4,710,121                   06/840,457                   12/01/87
4,710,122                   06/837,589                   12/01/87
4,710,124                   06/797,692                   12/01/87
4,710,138                   06/936,181                   12/01/87
4,710,141                   06/614,821                   12/01/87
4,710,142                   06/721,433                   12/01/87
4,710,151                   06/879,650                   12/01/87
4,710,158                   07/042,515                   12/01/87
4,710,161                   06/853,921                   12/01/87
4,710,169                   06/805,546                   12/01/87
4,710,173                   06/843,493                   12/01/87
4,710,174                   06/809,773                   12/01/87
4,710,178                   06/906,641                   12/01/87
4,710,179                   06/923,572                   12/01/87
4,710,182                   06/937,824                   12/01/87
4,710,188                   06/825,913                   12/01/87
4,710,193                   06/897,656                   12/01/87
4,710,197                   06/316,920                   12/01/87
4,710,201                   07/028,351                   12/01/87
4,710,204                   06/566,244                   12/01/87
4,710,209                   06/876,271                   12/01/87
4,710,212                   06/911,142                   12/01/87
4,710,226                   06/849,384                   12/01/87
4,710,233                   06/765,948                   12/01/87
4,710,242                   06/871,175                   12/01/87
4,710,245                   06/806,764                   12/01/87
4,710,247                   06/839,659                   12/01/87
4,710,257                   06/802,461                   12/01/87
4,710,258                   06/864,224                   12/01/87
4,710,260                   06/769,632                   12/01/87
4,710,266                   06/841,036                   12/01/87
4,710,267                   06/713,516                   12/01/87
4,710,269                   06/822,564                   12/01/87
4,710,271                   06/849,931                   12/01/87
4,710,274                   06/892,288                   12/01/87
4,710,275                   06/778,403                   12/01/87
4,710,279                   07/020,510                   12/01/87
4,710,287                   06/865,424                   12/01/87
4,710,290                   06/768,247                   12/01/87
4,710,291                   06/859,983                   12/01/87
4,710,299                   06/848,385                   12/01/87
4,710,301                   06/901,649                   12/01/87
4,710,302                   06/833,388                   12/01/87
4,710,306                   06/693,661                   12/01/87
4,710,308                   06/601,476                   12/01/87
4,710,310                   07/005,759                   12/01/87
4,710,312                   06/751,783                   12/01/87
4,710,320                   06/753,860                   12/01/87
4,710,329                   06/610,696                   12/01/87
4,710,334                   06/858,205                   12/01/87
4,710,337                   06/758,666                   12/01/87
4,710,342                   06/751,776                   12/01/87
4,710,345                   06/852,966                   12/01/87
4,710,346                   06/689,839                   12/01/87
4,710,347                   06/868,594                   12/01/87
4,710,350                   06/851,313                   12/01/87
4,710,352                   06/777,985                   12/01/87
4,710,353                   06/884,725                   12/01/87
4,710,354                   06/746,093                   12/01/87
4,710,359                   06/709,510                   12/01/87
4,710,361                   06/848,326                   12/01/87
4,710,366                   06/922,420                   12/01/87
4,710,367                   06/661,154                   12/01/87
4,710,369                   06/872,600                   12/01/87
4,710,373                   06/710,714                   12/01/87
4,710,376                   06/697,320                   12/01/87
4,710,379                   06/938,348                   12/01/87
4,710,386                   06/696,665                   12/01/87
4,710,388                   06/889,433                   12/01/87
4,710,396                   07/015,341                   12/01/87
4,710,403                   06/859,471                   12/01/87
4,710,410                   06/935,015                   12/01/87
4,710,414                   06/629,331                   12/01/87
4,710,420                   06/811,860                   12/01/87
4,710,423                   06/929,638                   12/01/87
4,710,424                   06/790,710                   12/01/87
4,710,426                   06/555,520                   12/01/87
4,710,433                   06/883,897                   12/01/87
4,710,441                   06/811,126                   12/01/87
4,710,445                   06/854,850                   12/01/87
4,710,451                   06/843,256                   12/01/87
4,710,453                   06/830,180                   12/01/87
4,710,454                   06/816,329                   12/01/87
4,710,457                   06/509,201                   12/01/87
4,710,458                   06/257,860                   12/01/87
4,710,460                   06/620,822                   12/01/87
4,710,461                   06/642,191                   12/01/87
4,710,466                   06/654,063                   12/01/87
4,710,472                   06/780,123                   12/01/87
4,710,480                   06/804,280                   12/01/87
4,710,481                   06/906,487                   12/01/87
4,710,493                   06/640,661                   12/01/87
4,710,524                   06/762,600                   12/01/87
4,710,525                   06/930,023                   12/01/87
4,710,535                   06/871,827                   12/01/87
4,710,538                   06/837,215                   12/01/87
4,710,541                   06/790,228                   12/01/87
4,710,557                   06/896,553                   12/01/87
4,710,578                   06/809,888                   12/01/87
4,710,582                   06/885,359                   12/01/87
4,710,584                   06/680,559                   12/01/87
4,710,589                   06/922,122                   12/01/87
4,710,599                   06/849,000                   12/01/87
4,710,606                   06/867,859                   12/01/87
4,710,613                   06/805,187                   12/01/87
4,710,614                   06/875,622                   12/01/87
4,710,617                   06/866,370                   12/01/87
4,710,623                   06/833,245                   12/01/87
4,710,624                   06/608,747                   12/01/87
4,710,625                   06/787,098                   12/01/87
4,710,630                   06/763,158                   12/01/87
4,710,639                   06/852,185                   12/01/87
4,710,644                   06/792,963                   12/01/87
4,710,660                   06/912,736                   12/01/87
4,710,665                   06/912,733                   12/01/87
4,710,666                   06/912,737                   12/01/87
4,710,687                   06/901,882                   12/01/87
4,710,694                   06/869,684                   12/01/87
4,710,696                   06/919,056                   12/01/87
4,710,701                   06/879,136                   12/01/87
4,710,711                   06/805,027                   12/01/87
4,710,720                   06/758,373                   12/01/87
4,710,729                   06/903,048                   12/01/87
4,710,730                   07/028,287                   12/01/87
4,710,740                   07/004,522                   12/01/87
4,710,747                   06/731,683                   12/01/87
4,710,749                   06/946,681                   12/01/87
4,710,757                   06/580,108                   12/01/87
4,710,763                   06/663,005                   12/01/87
4,710,766                   06/642,815                   12/01/87
4,710,769                   06/815,358                   12/01/87
4,710,774                   06/830,629                   12/01/87
4,710,775                   06/781,650                   12/01/87
4,710,778                   06/763,195                   12/01/87
4,710,784                   06/881,140                   12/01/87
4,710,787                   06/686,691                   12/01/87
4,710,789                   06/937,206                   12/01/87
4,710,790                   06/627,470                   12/01/87
4,710,801                   06/728,013                   12/01/87
4,710,805                   06/512,844                   12/01/87
4,710,809                   06/878,318                   12/01/87
4,710,815                   06/698,584                   12/01/87
4,710,823                   06/731,514                   12/01/87
4,710,824                   06/848,156                   12/01/87
4,710,826                   06/872,224                   12/01/87
4,710,828                   06/741,515                   12/01/87
4,710,833                   06/805,026                   12/01/87
4,710,842                   06/840,655                   12/01/87
4,710,844                   06/895,400                   12/01/87
4,710,853                   06/765,336                   12/01/87
4,710,860                   06/800,319                   12/01/87
4,710,862                   06/720,962                   12/01/87
4,710,871                   06/438,105                   12/01/87
4,710,886                   06/664,181                   12/01/87
4,710,888                   06/656,626                   12/01/87
4,710,890                   06/772,870                   12/01/87
4,710,895                   06/731,487                   12/01/87
4,710,901                   06/767,193                   12/01/87
4,710,904                   06/767,873                   12/01/87
4,710,908                   06/652,451                   12/01/87
4,710,919                   06/544,110                   12/01/87
4,710,928                   06/797,894                   12/01/87
4,710,932                   06/819,225                   12/01/87
4,710,934                   06/796,367                   12/01/87
4,710,949                   07/013,141                   12/01/87
4,710,962                   06/797,664                   12/01/87

                  PATENTS WHICH EXPIRED ON November 26, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,067,177                   07/525,409                   11/26/91
5,067,178                   07/408,844                   11/26/91
5,067,184                   07/494,564                   11/26/91
5,067,193                   07/558,692                   11/26/91
5,067,196                   07/612,986                   11/26/91
5,067,199                   07/592,118                   11/26/91
5,067,201                   07/432,156                   11/26/91
5,067,202                   07/549,756                   11/26/91
5,067,204                   07/495,912                   11/26/91
5,067,206                   07/543,219                   11/26/91
5,067,207                   07/563,349                   11/26/91
5,067,211                   07/542,301                   11/26/91
5,067,219                   07/603,959                   11/26/91
5,067,222                   07/577,932                   11/26/91
5,067,239                   07/561,285                   11/26/91
5,067,242                   07/644,642                   11/26/91
5,067,246                   07/663,101                   11/26/91
5,067,258                   07/548,339                   11/26/91
5,067,260                   07/495,083                   11/26/91
5,067,265                   07/528,035                   11/26/91
5,067,268                   07/572,703                   11/26/91
5,067,269                   07/645,986                   11/26/91
5,067,272                   07/265,109                   11/26/91
5,067,275                   07/482,889                   11/26/91
5,067,281                   07/604,682                   11/26/91
5,067,283                   07/611,793                   11/26/91
5,067,284                   07/454,693                   11/26/91
5,067,293                   07/565,376                   11/26/91
5,067,301                   07/566,598                   11/26/91
5,067,302                   07/470,803                   11/26/91
5,067,306                   07/531,996                   11/26/91
5,067,310                   07/574,089                   11/26/91
5,067,317                   07/484,303                   11/26/91
5,067,321                   07/480,145                   11/26/91
5,067,328                   07/378,653                   11/26/91
5,067,347                   07/554,402                   11/26/91
5,067,348                   07/511,084                   11/26/91
5,067,353                   07/674,959                   11/26/91
5,067,364                   07/438,406                   11/26/91
5,067,368                   07/449,217                   11/26/91
5,067,373                   07/461,282                   11/26/91
5,067,375                   07/613,993                   11/26/91
5,067,385                   07/554,556                   11/26/91
5,067,386                   07/195,657                   11/26/91
5,067,395                   07/475,682                   11/26/91
5,067,400                   07/470,144                   11/26/91
5,067,401                   07/433,782                   11/26/91
5,067,414                   07/627,184                   11/26/91
5,067,419                   07/456,561                   11/26/91
5,067,423                   07/534,049                   11/26/91
5,067,425                   07/650,938                   11/26/91
5,067,426                   07/402,074                   11/26/91
5,067,428                   07/585,953                   11/26/91
5,067,429                   07/410,899                   11/26/91
5,067,432                   07/527,362                   11/26/91
5,067,434                   07/541,514                   11/26/91
5,067,436                   07/386,435                   11/26/91
5,067,438                   07/637,541                   11/26/91
5,067,440                   07/630,966                   11/26/91
5,067,442                   07/327,100                   11/26/91
5,067,443                   07/590,235                   11/26/91
5,067,446                   07/599,039                   11/26/91
5,067,452                   07/547,767                   11/26/91
5,067,454                   07/366,786                   11/26/91
5,067,455                   07/605,853                   11/26/91
5,067,458                   07/438,277                   11/26/91
5,067,468                   07/502,278                   11/26/91
5,067,474                   07/589,266                   11/26/91
5,067,477                   07/388,109                   11/26/91
5,067,481                   07/571,664                   11/26/91
5,067,484                   07/578,739                   11/26/91
5,067,487                   07/313,157                   11/26/91
5,067,491                   07/448,034                   11/26/91
5,067,493                   07/551,656                   11/26/91
5,067,497                   07/494,464                   11/26/91
5,067,501                   07/656,981                   11/26/91
5,067,514                   07/573,349                   11/26/91
5,067,516                   07/583,200                   11/26/91
5,067,521                   07/644,254                   11/26/91
5,067,530                   07/619,138                   11/26/91
5,067,531                   07/429,047                   11/26/91
5,067,532                   07/481,185                   11/26/91
5,067,535                   07/503,982                   11/26/91
5,067,537                   07/431,074                   11/26/91
5,067,540                   07/105,596                   11/26/91
5,067,546                   07/509,815                   11/26/91
5,067,552                   07/385,773                   11/26/91
5,067,554                   07/359,674                   11/26/91
5,067,555                   07/550,770                   11/26/91
5,067,557                   07/483,889                   11/26/91
5,067,564                   07/596,796                   11/26/91
5,067,567                   07/523,343                   11/26/91
5,067,578                   07/593,494                   11/26/91
5,067,579                   07/484,865                   11/26/91
5,067,580                   07/570,214                   11/26/91
5,067,583                   07/563,262                   11/26/91
5,067,588                   07/506,459                   11/26/91
5,067,589                   07/560,378                   11/26/91
5,067,590                   07/586,191                   11/26/91
5,067,597                   07/398,709                   11/26/91
5,067,599                   07/547,620                   11/26/91
5,067,605                   07/559,529                   11/26/91
5,067,612                   07/645,331                   11/26/91
5,067,616                   07/351,994                   11/26/91
5,067,617                   07/590,154                   11/26/91
5,067,626                   07/553,121                   11/26/91
5,067,628                   07/546,416                   11/26/91
5,067,636                   07/404,305                   11/26/91
5,067,648                   07/559,869                   11/26/91
5,067,649                   07/608,638                   11/26/91
5,067,650                   07/610,407                   11/26/91
5,067,653                   07/536,812                   11/26/91
5,067,662                   07/545,032                   11/26/91
5,067,677                   07/627,248                   11/26/91
5,067,684                   07/555,530                   11/26/91
5,067,693                   07/492,140                   11/26/91
5,067,700                   07/566,553                   11/26/91
5,067,705                   07/531,731                   11/26/91
5,067,706                   07/580,219                   11/26/91
5,067,707                   07/435,445                   11/26/91
5,067,718                   07/636,893                   11/26/91
5,067,722                   07/560,455                   11/26/91
5,067,739                   07/631,497                   11/26/91
5,067,749                   07/294,219                   11/26/91
5,067,750                   07/446,350                   11/26/91
5,067,753                   07/525,749                   11/26/91
5,067,761                   07/561,186                   11/26/91
5,067,772                   07/501,003                   11/26/91
5,067,780                   07/374,009                   11/26/91
5,067,786                   07/623,201                   11/26/91
5,067,787                   07/342,448                   11/26/91
5,067,792                   07/584,524                   11/26/91
5,067,796                   07/620,094                   11/26/91
5,067,798                   07/316,140                   11/26/91
5,067,812                   07/460,091                   11/26/91
5,067,817                   07/476,701                   11/26/91
5,067,824                   07/545,569                   11/26/91
5,067,837                   07/440,318                   11/26/91
5,067,845                   07/623,211                   11/26/91
5,067,850                   07/575,864                   11/26/91
5,067,853                   07/554,563                   11/26/91
5,067,855                   07/438,207                   11/26/91
5,067,858                   07/682,980                   11/26/91
5,067,859                   07/480,748                   11/26/91
5,067,860                   07/567,651                   11/26/91
5,067,865                   07/429,148                   11/26/91
5,067,866                   07/537,732                   11/26/91
5,067,870                   07/548,275                   11/26/91
5,067,874                   07/508,974                   11/26/91
5,067,875                   07/508,204                   11/26/91
5,067,881                   07/524,021                   11/26/91
5,067,887                   07/664,268                   11/26/91
5,067,888                   07/547,375                   11/26/91
5,067,902                   07/464,227                   11/26/91
5,067,911                   07/600,338                   11/26/91
5,067,912                   07/116,473                   11/26/91
5,067,917                   07/404,330                   11/26/91
5,067,926                   07/504,856                   11/26/91
5,067,928                   07/608,527                   11/26/91
5,067,935                   07/524,789                   11/26/91
5,067,936                   07/658,191                   11/26/91
5,067,945                   07/303,588                   11/26/91
5,067,958                   07/608,297                   11/26/91
5,067,959                   07/532,961                   11/26/91
5,067,960                   07/446,593                   11/26/91
5,067,968                   07/607,214                   11/26/91
5,067,969                   07/491,341                   11/26/91
5,067,973                   07/497,651                   11/26/91
5,067,978                   07/568,861                   11/26/91
5,067,981                   07/413,335                   11/26/91
5,067,985                   07/534,981                   11/26/91
5,067,986                   07/524,273                   11/26/91
5,067,988                   07/474,197                   11/26/91
5,067,993                   07/345,549                   11/26/91
5,067,995                   07/366,715                   11/26/91
5,068,004                   07/345,634                   11/26/91
5,068,006                   07/577,245                   11/26/91
5,068,007                   07/587,143                   11/26/91
5,068,008                   07/604,456                   11/26/91
5,068,010                   07/520,950                   11/26/91
5,068,026                   07/489,192                   11/26/91
5,068,028                   07/485,959                   11/26/91
5,068,029                   07/481,320                   11/26/91
5,068,032                   07/467,925                   11/26/91
5,068,036                   07/502,290                   11/26/91
5,068,043                   07/391,004                   11/26/91
5,068,045                   07/596,624                   11/26/91
5,068,046                   07/657,287                   11/26/91
5,068,048                   07/476,079                   11/26/91
5,068,054                   07/322,589                   11/26/91
5,068,060                   07/520,499                   11/26/91
5,068,061                   07/447,990                   11/26/91
5,068,062                   07/333,257                   11/26/91
5,068,065                   07/563,659                   11/26/91
5,068,072                   07/448,284                   11/26/91
5,068,074                   07/260,419                   11/26/91
5,068,078                   07/535,702                   11/26/91
5,068,094                   07/529,193                   11/26/91
5,068,100                   07/613,332                   11/26/91
5,068,113                   07/409,809                   11/26/91
5,068,119                   07/590,298                   11/26/91
5,068,120                   07/561,099                   11/26/91
5,068,130                   07/601,971                   11/26/91
5,068,162                   07/339,444                   11/26/91
5,068,176                   07/345,887                   11/26/91
5,068,178                   07/517,953                   11/26/91
5,068,189                   07/194,672                   11/26/91
5,068,194                   07/256,584                   11/26/91
5,068,195                   07/266,876                   11/26/91
5,068,196                   07/485,588                   11/26/91
5,068,212                   07/569,805                   11/26/91
5,068,216                   07/686,844                   11/26/91
5,068,219                   07/445,639                   11/26/91
5,068,220                   07/534,974                   11/26/91
5,068,223                   07/324,151                   11/26/91
5,068,228                   07/231,015                   11/26/91
5,068,229                   07/557,186                   11/26/91
5,068,233                   07/449,318                   11/26/91
5,068,234                   07/484,759                   11/26/91
5,068,238                   07/545,822                   11/26/91
5,068,240                   07/533,943                   11/26/91
5,068,241                   07/652,169                   11/26/91
5,068,244                   07/312,885                   11/26/91
5,068,245                   07/251,243                   11/26/91
5,068,250                   07/251,550                   11/26/91
5,068,266                   07/426,351                   11/26/91
5,068,273                   07/545,440                   11/26/91
5,068,274                   07/554,498                   11/26/91
5,068,281                   07/504,137                   11/26/91
5,068,287                   07/611,775                   11/26/91
5,068,290                   07/516,730                   11/26/91
5,068,291                   07/498,199                   11/26/91
5,068,298                   07/542,763                   11/26/91
5,068,300                   07/599,258                   11/26/91
5,068,301                   07/404,544                   11/26/91
5,068,304                   07/446,661                   11/26/91
5,068,306                   07/605,591                   11/26/91
5,068,312                   07/502,630                   11/26/91
5,068,315                   07/508,339                   11/26/91
5,068,318                   07/523,775                   11/26/91
5,068,321                   07/420,841                   11/26/91
5,068,322                   07/522,817                   11/26/91
5,068,324                   07/402,649                   11/26/91
5,068,325                   07/368,753                   11/26/91
5,068,326                   07/332,625                   11/26/91
5,068,327                   07/448,644                   11/26/91
5,068,336                   07/484,513                   11/26/91
5,068,337                   06/930,972                   11/26/91
5,068,340                   07/368,132                   11/26/91
5,068,349                   07/404,353                   11/26/91
5,068,355                   07/592,814                   11/26/91
5,068,356                   07/481,940                   11/26/91
5,068,357                   07/536,366                   11/26/91
5,068,359                   07/537,196                   11/26/91
5,068,367                   07/472,920                   11/26/91
5,068,368                   07/521,743                   11/26/91
5,068,370                   07/534,997                   11/26/91
5,068,373                   07/647,403                   11/26/91
5,068,374                   07/647,402                   11/26/91
5,068,380                   07/450,492                   11/26/91
5,068,387                   07/444,345                   11/26/91
5,068,389                   07/518,254                   11/26/91
5,068,391                   07/545,547                   11/26/91
5,068,406                   07/561,063                   11/26/91
5,068,408                   07/473,084                   11/26/91
5,068,409                   07/579,360                   11/26/91
5,068,411                   07/476,214                   11/26/91
5,068,414                   07/470,685                   11/26/91
5,068,418                   07/349,272                   11/26/91
5,068,419                   07/349,273                   11/26/91
5,068,420                   07/608,613                   11/26/91
5,068,424                   07/365,790                   11/26/91
5,068,425                   07/598,927                   11/26/91
5,068,426                   07/467,712                   11/26/91
5,068,441                   07/485,119                   11/26/91
5,068,443                   07/532,035                   11/26/91
5,068,444                   07/429,671                   11/26/91
5,068,452                   07/503,339                   11/26/91
5,068,463                   07/592,473                   11/26/91
5,068,469                   07/476,163                   11/26/91
5,068,477                   07/692,756                   11/26/91
5,068,479                   07/668,484                   11/26/91
5,068,481                   07/611,589                   11/26/91
5,068,482                   07/591,172                   11/26/91
5,068,485                   07/494,380                   11/26/91
5,068,489                   07/458,390                   11/26/91
5,068,492                   07/479,085                   11/26/91
5,068,495                   07/372,356                   11/26/91
5,068,497                   07/577,940                   11/26/91
5,068,504                   07/486,690                   11/26/91
5,068,506                   07/642,549                   11/26/91
5,068,512                   07/573,229                   11/26/91
5,068,522                   07/485,208                   11/26/91
5,068,528                   07/574,203                   11/26/91
5,068,546                   07/573,536                   11/26/91
5,068,554                   07/400,773                   11/26/91
5,068,559                   07/588,921                   11/26/91
5,068,560                   07/634,056                   11/26/91
5,068,566                   07/532,837                   11/26/91
5,068,568                   07/524,718                   11/26/91
5,068,575                   07/659,193                   11/26/91
5,068,579                   07/524,953                   11/26/91
5,068,581                   07/573,635                   11/26/91
5,068,605                   07/404,355                   11/26/91
5,068,606                   07/409,220                   11/26/91
5,068,608                   07/429,106                   11/26/91
5,068,610                   07/358,327                   11/26/91
5,068,615                   07/539,732                   11/26/91
5,068,627                   07/617,130                   11/26/91
5,068,632                   07/451,821                   11/26/91
5,068,638                   07/405,484                   11/26/91
5,068,639                   07/543,448                   11/26/91
5,068,640                   07/466,301                   11/26/91
5,068,642                   07/501,125                   11/26/91
5,068,646                   07/306,283                   11/26/91
5,068,654                   07/374,841                   11/26/91
5,068,655                   07/504,181                   11/26/91
5,068,660                   07/428,397                   11/26/91
5,068,662                   07/589,172                   11/26/91
5,068,669                   07/239,284                   11/26/91
5,068,671                   07/218,198                   11/26/91
5,068,672                   07/318,858                   11/26/91
5,068,681                   07/540,909                   11/26/91
5,068,684                   07/391,902                   11/26/91
5,068,694                   07/635,446                   11/26/91
5,068,710                   07/396,687                   11/26/91
5,068,717                   07/515,195                   11/26/91
5,068,728                   07/542,108                   11/26/91
5,068,729                   07/413,881                   11/26/91
5,068,747                   07/462,980                   11/26/91
5,068,748                   07/598,199                   11/26/91
5,068,751                   07/570,242                   11/26/91
5,068,752                   07/248,799                   11/26/91
5,068,761                   07/507,621                   11/26/91
5,068,766                   07/572,258                   11/26/91
5,068,767                   07/640,626                   11/26/91
5,068,769                   07/551,939                   11/26/91
5,068,776                   07/619,608                   11/26/91
5,068,777                   07/559,796                   11/26/91
5,068,778                   07/276,964                   11/26/91
5,068,779                   07/329,572                   11/26/91
5,068,786                   07/327,696                   11/26/91
5,068,787                   07/492,544                   11/26/91
5,068,794                   07/513,841                   11/26/91
5,068,813                   07/432,545                   11/26/91
5,068,814                   07/433,612                   11/26/91
5,068,817                   07/408,516                   11/26/91
5,068,819                   07/647,183                   11/26/91
5,068,820                   07/221,908                   11/26/91
5,068,825                   07/546,497                   11/26/91
5,068,832                   07/481,421                   11/26/91
5,068,833                   07/508,219                   11/26/91
5,068,834                   07/527,939                   11/26/91
5,068,835                   07/584,507                   11/26/91
5,068,836                   07/584,932                   11/26/91
5,068,839                   07/459,765                   11/26/91
5,068,853                   07/399,317                   11/26/91
5,068,869                   07/206,386                   11/26/91
5,068,870                   07/612,943                   11/26/91
5,068,871                   07/563,187                   11/26/91
5,068,873                   07/604,940                   11/26/91
5,068,875                   07/401,679                   11/26/91
5,068,880                   07/580,043                   11/26/91
5,068,884                   07/459,244                   11/26/91
5,068,888                   07/393,482                   11/26/91
5,068,915                   07/574,596                   11/26/91
5,068,918                   07/530,687                   11/26/91

                  PATENTS WHICH EXPIRED ON November 28, 1999
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,469,579                   08/185,387                   11/28/95
5,469,581                   08/208,476                   11/28/95
5,469,582                   08/336,226                   11/28/95
5,469,585                   08/304,124                   11/28/95
5,469,586                   07/732,815                   11/28/95
5,469,591                   08/301,408                   11/28/95
5,469,592                   08/126,552                   11/28/95
5,469,595                   08/262,839                   11/28/95
5,469,602                   08/284,987                   11/28/95
5,469,613                   08/219,064                   11/28/95
5,469,624                   08/155,007                   11/28/95
5,469,628                   08/375,597                   11/28/95
5,469,629                   08/252,900                   11/28/95
5,469,630                   08/297,847                   11/28/95
5,469,631                   08/334,569                   11/28/95
5,469,632                   08/225,272                   11/28/95
5,469,635                   08/187,202                   11/28/95
5,469,641                   08/380,556                   11/28/95
5,469,644                   08/129,178                   11/28/95
5,469,645                   08/229,248                   11/28/95
5,469,647                   08/154,187                   11/28/95
5,469,655                   08/394,599                   11/28/95
5,469,656                   08/411,409                   11/28/95
5,469,659                   08/163,664                   11/28/95
5,469,660                   08/179,343                   11/28/95
5,469,666                   08/304,926                   11/28/95
5,469,667                   08/250,819                   11/28/95
5,469,673                   08/223,777                   11/28/95
5,469,677                   08/180,144                   11/28/95
5,469,681                   08/207,685                   11/28/95
5,469,695                   08/165,028                   11/28/95
5,469,696                   08/345,552                   11/28/95
5,469,704                   08/150,062                   11/28/95
5,469,707                   08/140,196                   11/28/95
5,469,722                   08/083,034                   11/28/95
5,469,723                   07/982,691                   11/28/95
5,469,726                   08/257,712                   11/28/95
5,469,733                   08/194,169                   11/28/95
5,469,734                   08/357,133                   11/28/95
5,469,738                   08/259,473                   11/28/95
5,469,739                   08/274,064                   11/28/95
5,469,755                   08/063,930                   11/28/95
5,469,756                   08/211,581                   11/28/95
5,469,764                   08/215,097                   11/28/95
5,469,766                   08/314,091                   11/28/95
5,469,769                   07/371,601                   11/28/95
5,469,772                   08/040,209                   11/28/95
5,469,774                   08/183,821                   11/28/95
5,469,784                   08/233,457                   11/28/95
5,469,785                   08/421,517                   11/28/95
5,469,795                   08/197,826                   11/28/95
5,469,796                   08/024,939                   11/28/95
5,469,804                   08/306,122                   11/28/95
5,469,805                   08/178,755                   11/28/95
5,469,810                   08/237,839                   11/28/95
5,469,813                   08/147,490                   11/28/95
5,469,815                   08/373,989                   11/28/95
5,469,821                   08/176,038                   11/28/95
5,469,824                   08/206,329                   11/28/95
5,469,848                   08/256,169                   11/28/95
5,469,857                   08/198,587                   11/28/95
5,469,859                   08/082,606                   11/28/95
5,469,863                   08/104,666                   11/28/95
5,469,865                   08/253,099                   11/28/95
5,469,873                   08/213,020                   11/28/95
5,469,875                   08/253,674                   11/28/95
5,469,882                   08/355,555                   11/28/95
5,469,883                   08/345,753                   11/28/95
5,469,886                   08/401,164                   11/28/95
5,469,888                   08/338,822                   11/28/95
5,469,890                   08/329,986                   11/28/95
5,469,895                   08/237,426                   11/28/95
5,469,896                   08/238,297                   11/28/95
5,469,900                   08/456,121                   11/28/95
5,469,906                   08/170,066                   11/28/95
5,469,929                   08/415,805                   11/28/95
5,469,932                   08/257,367                   11/28/95
5,469,933                   08/299,747                   11/28/95
5,469,934                   08/315,871                   11/28/95
5,469,935                   08/299,455                   11/28/95
5,469,939                   08/305,383                   11/28/95
5,469,944                   08/280,662                   11/28/95
5,469,945                   08/280,669                   11/28/95
5,469,946                   08/189,717                   11/28/95
5,469,959                   08/248,395                   11/28/95
5,469,961                   08/290,138                   11/28/95
5,469,965                   08/138,286                   11/28/95
5,469,970                   08/254,072                   11/28/95
5,469,975                   08/173,202                   11/28/95
5,469,977                   08/282,320                   11/28/95
5,469,979                   08/326,845                   11/28/95
5,469,984                   08/211,188                   11/28/95
5,469,990                   08/282,318                   11/28/95
5,469,992                   08/176,533                   11/28/95
5,469,996                   08/146,017                   11/28/95
5,469,997                   08/305,077                   11/28/95
5,469,999                   08/099,063                   11/28/95
5,470,000                   08/230,078                   11/28/95
5,470,013                   08/290,839                   11/28/95
5,470,014                   08/300,276                   11/28/95
5,470,015                   08/418,888                   11/28/95
5,470,024                   08/220,503                   11/28/95
5,470,034                   08/219,217                   11/28/95
5,470,036                   08/222,823                   11/28/95
5,470,042                   08/107,756                   11/28/95
5,470,043                   08/250,208                   11/28/95
5,470,044                   08/320,226                   11/28/95
5,470,047                   08/265,341                   11/28/95
5,470,057                   08/382,967                   11/28/95
5,470,065                   08/293,686                   11/28/95
5,470,066                   08/243,776                   11/28/95
5,470,067                   08/379,170                   11/28/95
5,470,068                   08/182,423                   11/28/95
5,470,070                   08/334,133                   11/28/95
5,470,071                   08/307,078                   11/28/95
5,470,073                   08/060,320                   11/28/95
5,470,074                   08/276,589                   11/28/95
5,470,076                   08/018,744                   11/28/95
5,470,077                   07/684,906                   11/28/95
5,470,078                   08/157,472                   11/28/95
5,470,084                   08/335,151                   11/28/95
5,470,087                   08/375,604                   11/28/95
5,470,089                   08/172,913                   11/28/95
5,470,092                   08/424,888                   11/28/95
5,470,093                   08/320,648                   11/28/95
5,470,094                   08/291,020                   11/28/95
5,470,095                   08/278,176                   11/28/95
5,470,101                   08/169,907                   11/28/95
5,470,106                   08/211,500                   11/28/95
5,470,113                   08/242,288                   11/28/95
5,470,116                   08/214,807                   11/28/95
5,470,122                   08/017,774                   11/28/95
5,470,126                   08/146,851                   11/28/95
5,470,127                   08/164,401                   11/28/95
5,470,129                   08/125,413                   11/28/95
5,470,140                   08/223,687                   11/28/95
5,470,145                   07/995,368                   11/28/95
5,470,150                   08/107,345                   11/28/95
5,470,151                   08/268,502                   11/28/95
5,470,153                   08/195,022                   11/28/95
5,470,163                   08/283,288                   11/28/95
5,470,164                   08/400,805                   11/28/95
5,470,170                   08/315,323                   11/28/95
5,470,171                   08/104,881                   11/28/95
5,470,177                   08/204,768                   11/28/95
5,470,178                   08/197,937                   11/28/95
5,470,190                   08/092,113                   11/28/95
5,470,197                   08/331,017                   11/28/95
5,470,199                   08/200,236                   11/28/95
5,470,204                   08/200,238                   11/28/95
5,470,205                   08/238,218                   11/28/95
5,470,207                   08/258,897                   11/28/95
5,470,210                   08/167,239                   11/28/95
5,470,212                   08/238,717                   11/28/95
5,470,227                   08/260,956                   11/28/95
5,470,232                   08/129,729                   11/28/95
5,470,234                   08/261,333                   11/28/95
5,470,249                   08/337,113                   11/28/95
5,470,268                   07/583,094                   11/28/95
5,470,269                   08/293,892                   11/28/95
5,470,273                   08/159,445                   11/28/95
5,470,278                   08/370,416                   11/28/95
5,470,283                   08/179,561                   11/28/95
5,470,285                   08/094,612                   11/28/95
5,470,289                   08/193,079                   11/28/95
5,470,291                   08/332,439                   11/28/95
5,470,294                   08/304,290                   11/28/95
5,470,295                   08/399,650                   11/28/95
5,470,297                   08/259,243                   11/28/95
5,470,299                   08/228,961                   11/28/95
5,470,301                   08/180,293                   11/28/95
5,470,304                   08/320,563                   11/28/95
5,470,310                   08/196,479                   11/28/95
5,470,321                   08/318,761                   11/28/95
5,470,325                   07/843,259                   11/28/95
5,470,333                   08/075,239                   11/28/95
5,470,350                   08/218,582                   11/28/95
5,470,355                   08/191,346                   11/28/95
5,470,356                   07/955,615                   11/28/95
5,470,360                   08/209,043                   11/28/95
5,470,361                   08/331,364                   11/28/95
5,470,370                   08/267,694                   11/28/95
5,470,396                   08/226,673                   11/28/95
5,470,408                   08/141,389                   11/28/95
5,470,419                   08/170,990                   11/28/95
5,470,422                   08/334,574                   11/28/95
5,470,430                   08/335,470                   11/28/95
5,470,433                   08/332,039                   11/28/95
5,470,438                   08/288,893                   11/28/95
5,470,444                   08/386,811                   11/28/95
5,470,446                   08/217,053                   11/28/95
5,470,457                   08/261,595                   11/28/95
5,470,458                   07/976,724                   11/28/95
5,470,474                   08/217,631                   11/28/95
5,470,476                   08/113,321                   11/28/95
5,470,489                   08/142,318                   11/28/95
5,470,494                   08/301,564                   11/28/95
5,470,495                   08/155,509                   11/28/95
5,470,499                   08/125,949                   11/28/95
5,470,502                   08/193,874                   11/28/95
5,470,504                   08/181,750                   11/28/95
5,470,509                   08/313,654                   11/28/95
5,470,510                   08/211,189                   11/28/95
5,470,512                   08/120,654                   11/28/95
5,470,518                   08/193,333                   11/28/95
5,470,535                   08/208,790                   11/28/95
5,470,545                   07/773,938                   11/28/95
5,470,547                   08/238,867                   11/28/95
5,470,548                   08/290,567                   11/28/95
5,470,556                   08/171,954                   11/28/95
5,470,563                   07/442,376                   11/28/95
5,470,580                   08/271,339                   11/28/95
5,470,592                   08/319,705                   11/28/95
5,470,595                   08/200,120                   11/28/95
5,470,600                   08/168,640                   11/28/95
5,470,605                   08/239,697                   11/28/95
5,470,606                   08/261,545                   11/28/95
5,470,609                   07/987,507                   11/28/95
5,470,625                   08/171,316                   11/28/95
5,470,636                   07/851,041                   11/28/95
5,470,644                   08/230,748                   11/28/95
5,470,649                   08/265,361                   11/28/95
5,470,674                   08/341,494                   11/28/95
5,470,697                   08/252,268                   11/28/95
5,470,720                   08/049,531                   11/28/95
5,470,723                   08/111,076                   11/28/95
5,470,724                   08/184,941                   11/28/95
5,470,745                   08/284,167                   11/28/95
5,470,761                   08/119,640                   11/28/95
5,470,765                   08/195,086                   11/28/95
5,470,767                   08/321,851                   11/28/95
5,470,777                   08/248,830                   11/28/95
5,470,782                   08/342,052                   11/28/95
5,470,806                   08/123,918                   11/28/95
5,470,809                   08/240,239                   11/28/95
5,470,814                   08/278,643                   11/28/95
5,470,815                   08/175,286                   11/28/95
5,470,820                   08/120,172                   11/28/95
5,470,821                   08/389,544                   11/28/95
5,470,822                   08/245,329                   11/28/95
5,470,823                   08/056,674                   11/28/95
5,470,832                   08/189,772                   11/28/95
5,470,849                   08/050,178                   11/28/95
5,470,851                   08/129,774                   11/28/95
5,470,856                   08/025,707                   11/28/95
5,470,858                   07/901,628                   11/28/95
5,470,860                   08/244,887                   11/28/95
5,470,861                   08/286,152                   11/28/95
5,470,867                   08/324,772                   11/28/95
5,470,869                   08/189,380                   11/28/95
5,470,872                   08/166,612                   11/28/95
5,470,874                   08/323,095                   11/28/95
5,470,875                   08/369,600                   11/28/95
5,470,895                   08/259,314                   11/28/95
5,470,905                   08/216,296                   11/28/95
5,470,918                   08/248,183                   11/28/95
5,470,933                   08/120,815                   11/28/95
5,470,944                   07/835,166                   11/28/95
5,470,946                   08/291,962                   11/28/95
5,470,948                   08/078,289                   11/28/95
5,470,956                   08/184,178                   11/28/95
5,470,959                   08/185,235                   11/28/95
5,470,960                   08/371,564                   11/28/95
5,470,962                   08/108,672                   11/28/95
5,470,965                   07/554,972                   11/28/95
5,470,988                   08/181,575                   11/28/95
5,471,010                   08/330,877                   11/28/95
5,471,012                   08/281,594                   11/28/95
5,471,019                   08/366,487                   11/28/95
5,471,025                   08/207,569                   11/28/95
5,471,032                   08/129,510                   11/28/95
5,471,054                   07/951,221                   11/28/95
5,471,069                   08/242,074                   11/28/95
5,471,077                   07/774,503                   11/28/95
5,471,079                   07/896,532                   11/28/95
5,471,082                   08/305,601                   11/28/95
5,471,095                   08/237,309                   11/28/95
5,471,098                   08/312,087                   11/28/95
5,471,099                   07/977,297                   11/28/95
5,471,102                   08/239,467                   11/28/95
5,471,104                   08/109,706                   11/28/95
5,471,108                   08/193,658                   11/28/95
5,471,111                   08/063,490                   11/28/95
5,471,117                   08/241,058                   11/28/95
5,471,119                   08/255,395                   11/28/95
5,471,127                   08/238,154                   11/28/95
5,471,135                   08/325,970                   11/28/95
5,471,136                   08/146,989                   11/28/95
5,471,139                   08/083,121                   11/28/95
5,471,141                   08/376,085                   11/28/95
5,471,152                   08/133,588                   11/28/95
5,471,161                   08/322,407                   11/28/95
5,471,165                   08/201,851                   11/28/95
5,471,179                   08/360,173                   11/28/95
5,471,182                   08/287,023                   11/28/95
5,471,184                   08/274,320                   11/28/95
5,471,185                   08/350,291                   11/28/95
5,471,191                   08/152,238                   11/28/95
5,471,194                   08/035,978                   11/28/95
5,471,197                   08/020,207                   11/28/95
5,471,200                   08/229,764                   11/28/95
5,471,201                   08/065,002                   11/28/95
5,471,237                   08/156,036                   11/28/95
5,471,238                   07/959,913                   11/28/95
5,471,250                   08/357,861                   11/28/95
5,471,252                   08/146,746                   11/28/95
5,471,253                   08/218,418                   11/28/95
5,471,258                   08/426,879                   11/28/95
5,471,262                   08/237,634                   11/28/95
5,471,294                   08/315,183                   11/28/95
5,471,304                   08/214,986                   11/28/95
5,471,306                   08/296,802                   11/28/95
5,471,310                   08/064,426                   11/28/95
5,471,342                   08/219,990                   11/28/95
5,471,346                   08/189,615                   11/28/95
5,471,359                   08/022,306                   11/28/95
5,471,377                   07/930,696                   11/28/95
5,471,387                   08/228,660                   11/28/95
5,471,389                   08/010,601                   11/28/95
5,471,394                   08/157,064                   11/28/95
5,471,419                   08/231,860                   11/28/95
5,471,433                   08/324,638                   11/28/95
5,471,434                   08/324,639                   11/28/95
5,471,436                   08/290,985                   11/28/95
5,471,443                   08/301,040                   11/28/95
5,471,444                   08/305,804                   11/28/95
5,471,459                   08/060,749                   11/28/95
5,471,462                   08/219,327                   11/28/95
5,471,467                   08/057,656                   11/28/95
5,471,479                   08/266,418                   11/28/95
5,471,509                   08/033,717                   11/28/95
5,471,514                   08/093,151                   11/28/95
5,471,530                   08/326,241                   11/28/95
5,471,536                   08/069,861                   11/28/95
5,471,541                   08/152,745                   11/28/95
5,471,549                   08/235,195                   11/28/95
5,471,566                   08/106,568                   11/28/95
5,471,570                   08/176,128                   11/28/95
5,471,576                   07/976,628                   11/28/95
5,471,581                   08/146,770                   11/28/95
5,471,623                   07/660,503                   11/28/95
5,471,625                   08/125,851                   11/28/95
5,471,659                   08/096,223                   11/28/95
5,471,676                   08/267,178                   11/28/95