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 October 14, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,616,372                   06/819,135                   10/14/86
4,616,377                   06/662,880                   10/14/86
4,616,385                   06/644,008                   10/14/86
4,616,387                   06/659,531                   10/14/86
4,616,389                   06/722,855                   10/14/86
4,616,394                   06/733,102                   10/14/86
4,616,400                   06/684,523                   10/14/86
4,616,403                   06/646,659                   10/14/86
4,616,428                   06/695,260                   10/14/86
4,616,430                   06/623,922                   10/14/86
4,616,438                   06/668,802                   10/14/86
4,616,450                   06/708,499                   10/14/86
4,616,469                   06/732,904                   10/14/86
4,616,477                   06/751,190                   10/14/86
4,616,481                   06/696,217                   10/14/86
4,616,486                   06/747,109                   10/14/86
4,616,487                   06/768,760                   10/14/86
4,616,503                   06/714,727                   10/14/86
4,616,512                   06/674,165                   10/14/86
4,616,513                   06/725,500                   10/14/86
4,616,517                   06/828,585                   10/14/86
4,616,518                   06/645,375                   10/14/86
4,616,534                   06/664,039                   10/14/86
4,616,536                   06/806,978                   10/14/86
4,616,537                   06/782,977                   10/14/86
4,616,539                   06/756,652                   10/14/86
4,616,542                   06/648,380                   10/14/86
4,616,550                   06/641,966                   10/14/86
4,616,553                   06/698,811                   10/14/86
4,616,557                   06/753,725                   10/14/86
4,616,565                   06/622,613                   10/14/86
4,616,568                   06/634,102                   10/14/86
4,616,572                   06/661,582                   10/14/86
4,616,579                   06/718,493                   10/14/86
4,616,580                   06/694,033                   10/14/86
4,616,583                   06/767,584                   10/14/86
4,616,585                   06/793,824                   10/14/86
4,616,591                   06/724,536                   10/14/86
4,616,604                   06/548,863                   10/14/86
4,616,608                   06/676,006                   10/14/86
4,616,610                   06/716,820                   10/14/86
4,616,621                   06/542,994                   10/14/86
4,616,622                   06/639,399                   10/14/86
4,616,635                   06/719,687                   10/14/86
4,616,654                   06/658,861                   10/14/86
4,616,660                   06/680,007                   10/14/86
4,616,673                   06/805,266                   10/14/86
4,616,677                   06/723,135                   10/14/86
4,616,678                   06/771,026                   10/14/86
4,616,684                   06/703,746                   10/14/86
4,616,688                   06/562,141                   10/14/86
4,616,698                   06/368,569                   10/14/86
4,616,700                   06/652,175                   10/14/86
4,616,702                   06/606,472                   10/14/86
4,616,705                   06/843,858                   10/14/86
4,616,713                   06/676,491                   10/14/86
4,616,716                   06/593,678                   10/14/86
4,616,720                   06/653,841                   10/14/86
4,616,721                   06/675,354                   10/14/86
4,616,728                   06/711,439                   10/14/86
4,616,737                   06/677,330                   10/14/86
4,616,744                   06/691,270                   10/14/86
4,616,768                   06/616,048                   10/14/86
4,616,779                   06/632,060                   10/14/86
4,616,783                   06/640,512                   10/14/86
4,616,784                   06/673,294                   10/14/86
4,616,785                   06/403,487                   10/14/86
4,616,788                   06/698,246                   10/14/86
4,616,789                   06/541,096                   10/14/86
4,616,794                   06/769,079                   10/14/86
4,616,796                   06/364,407                   10/14/86
4,616,799                   06/786,164                   10/14/86
4,616,804                   06/575,400                   10/14/86
4,616,805                   06/740,575                   10/14/86
4,616,806                   06/751,474                   10/14/86
4,616,815                   06/708,300                   10/14/86
4,616,816                   06/778,615                   10/14/86
4,616,817                   06/606,684                   10/14/86
4,616,820                   06/730,159                   10/14/86
4,616,821                   06/715,940                   10/14/86
4,616,823                   06/640,775                   10/14/86
4,616,825                   06/708,019                   10/14/86
4,616,837                   06/808,006                   10/14/86
4,616,846                   06/765,341                   10/14/86
4,616,848                   06/771,766                   10/14/86
4,616,874                   06/615,045                   10/14/86
4,616,875                   06/542,458                   10/14/86
4,616,882                   06/645,928                   10/14/86
4,616,883                   06/789,265                   10/14/86
4,616,897                   06/681,400                   10/14/86
4,616,900                   06/595,686                   10/14/86
4,616,902                   06/629,317                   10/14/86
4,616,907                   06/722,263                   10/14/86
4,616,908                   06/632,449                   10/14/86
4,616,911                   06/738,313                   10/14/86
4,616,915                   06/677,090                   10/14/86
4,616,924                   06/594,624                   10/14/86
4,616,928                   06/622,769                   10/14/86
4,616,931                   06/549,507                   10/14/86
4,616,933                   06/593,882                   10/14/86
4,616,935                   06/683,584                   10/14/86
4,616,945                   06/696,689                   10/14/86
4,616,953                   06/781,030                   10/14/86
4,616,955                   06/661,855                   10/14/86
4,616,956                   06/618,298                   10/14/86
4,616,965                   06/583,712                   10/14/86
4,616,966                   06/540,686                   10/14/86
4,616,973                   06/687,778                   10/14/86
4,616,982                   06/661,944                   10/14/86
4,616,992                   06/743,948                   10/14/86
4,617,001                   06/459,572                   10/14/86
4,617,009                   06/637,046                   10/14/86
4,617,020                   06/662,498                   10/14/86
4,617,022                   06/784,689                   10/14/86
4,617,025                   06/725,702                   10/14/86
4,617,035                   06/675,846                   10/14/86
4,617,044                   06/769,210                   10/14/86
4,617,049                   06/768,062                   10/14/86
4,617,063                   06/710,028                   10/14/86
4,617,072                   06/633,870                   10/14/86
4,617,076                   06/651,580                   10/14/86
4,617,088                   06/787,726                   10/14/86
4,617,089                   06/713,615                   10/14/86
4,617,090                   06/684,099                   10/14/86
4,617,096                   06/823,293                   10/14/86
4,617,101                   06/320,436                   10/14/86
4,617,107                   06/531,891                   10/14/86
4,617,108                   06/736,183                   10/14/86
4,617,110                   06/619,253                   10/14/86
4,617,111                   06/759,217                   10/14/86
4,617,124                   06/397,762                   10/14/86
4,617,127                   06/736,047                   10/14/86
4,617,133                   06/639,179                   10/14/86
4,617,141                   06/712,752                   10/14/86
4,617,142                   06/717,040                   10/14/86
4,617,150                   06/769,536                   10/14/86
4,617,151                   06/712,291                   10/14/86
4,617,152                   06/703,056                   10/14/86
4,617,155                   06/701,372                   10/14/86
4,617,157                   06/725,805                   10/14/86
4,617,164                   06/571,069                   10/14/86
4,617,173                   06/676,694                   10/14/86
4,617,182                   06/769,230                   10/14/86
4,617,183                   06/771,574                   10/14/86
4,617,186                   06/687,276                   10/14/86
4,617,195                   06/644,273                   10/14/86
4,617,206                   06/645,884                   10/14/86
4,617,207                   06/639,030                   10/14/86
4,617,209                   06/689,792                   10/14/86
4,617,219                   06/685,481                   10/14/86
4,617,224                   06/661,069                   10/14/86
4,617,227                   06/710,813                   10/14/86
4,617,247                   06/697,580                   10/14/86
4,617,248                   06/736,149                   10/14/86
4,617,254                   06/723,009                   10/14/86
4,617,274                   06/534,848                   10/14/86
4,617,279                   06/775,355                   10/14/86
4,617,285                   06/713,600                   10/14/86
4,617,287                   06/782,806                   10/14/86
4,617,290                   06/630,245                   10/14/86
4,617,293                   06/613,131                   10/14/86
4,617,300                   06/652,707                   10/14/86
4,617,305                   06/582,314                   10/14/86
4,617,315                   06/738,043                   10/14/86
4,617,331                   06/750,840                   10/14/86
4,617,335                   06/758,149                   10/14/86
4,617,337                   06/673,005                   10/14/86
4,617,340                   06/740,983                   10/14/86
4,617,343                   06/602,789                   10/14/86
4,617,344                   06/732,239                   10/14/86
4,617,350                   06/826,373                   10/14/86
4,617,363                   06/707,013                   10/14/86
4,617,384                   06/426,457                   10/14/86
4,617,387                   06/640,907                   10/14/86
4,617,395                   06/660,956                   10/14/86
4,617,399                   06/718,681                   10/14/86
4,617,402                   06/528,454                   10/14/86
4,617,411                   06/715,445                   10/14/86
4,617,424                   06/608,464                   10/14/86
4,617,427                   06/701,288                   10/14/86
4,617,428                   06/659,398                   10/14/86
4,617,431                   06/557,432                   10/14/86
4,617,435                   06/753,777                   10/14/86
4,617,441                   06/623,788                   10/14/86
4,617,444                   06/718,066                   10/14/86
4,617,450                   06/477,725                   10/14/86
4,617,455                   06/774,462                   10/14/86
4,617,461                   06/603,876                   10/14/86
4,617,470                   06/692,761                   10/14/86
4,617,480                   06/663,517                   10/14/86
4,617,486                   06/725,207                   10/14/86
4,617,489                   06/591,744                   10/14/86
4,617,490                   06/679,191                   10/14/86
4,617,496                   06/758,589                   10/14/86
4,617,501                   06/777,845                   10/14/86
4,617,512                   06/511,076                   10/14/86
4,617,521                   06/741,263                   10/14/86
4,617,531                   06/775,926                   10/14/86
4,617,533                   06/701,391                   10/14/86
4,617,543                   06/694,427                   10/14/86
4,617,546                   06/657,924                   10/14/86
4,617,562                   06/483,729                   10/14/86
4,617,564                   06/542,327                   10/14/86
4,617,568                   06/620,029                   10/14/86
4,617,570                   06/526,848                   10/14/86
4,617,577                   06/532,734                   10/14/86
4,617,578                   06/699,159                   10/14/86
4,617,582                   06/622,246                   10/14/86
4,617,592                   06/473,400                   10/14/86
4,617,599                   06/620,893                   10/14/86
4,617,600                   06/593,073                   10/14/86
4,617,601                   06/491,141                   10/14/86
4,617,603                   06/706,134                   10/14/86
4,617,607                   06/807,258                   10/14/86
4,617,610                   06/797,099                   10/14/86
4,617,615                   06/682,561                   10/14/86
4,617,618                   06/585,786                   10/14/86
4,617,639                   06/638,913                   10/14/86
4,617,645                   06/649,227                   10/14/86
4,617,646                   06/626,161                   10/14/86
4,617,653                   06/566,323                   10/14/86
4,617,659                   06/669,358                   10/14/86
4,617,661                   06/669,229                   10/14/86
4,617,667                   06/546,741                   10/14/86
4,617,668                   06/731,619                   10/14/86
4,617,671                   06/696,357                   10/14/86
4,617,672                   06/775,538                   10/14/86
4,617,675                   06/709,580                   10/14/86

                   PATENTS WHICH EXPIRED ON October 9, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

4,961,234                   07/328,288                   10/09/90
4,961,235                   07/344,314                   10/09/90
4,961,238                   07/214,337                   10/09/90
4,961,239                   07/234,608                   10/09/90
4,961,240                   07/320,174                   10/09/90
4,961,244                   07/217,403                   10/09/90
4,961,245                   07/475,392                   10/09/90
4,961,249                   07/466,932                   10/09/90
4,961,252                   07/447,831                   10/09/90
4,961,256                   07/417,628                   10/09/90
4,961,257                   07/449,706                   10/09/90
4,961,258                   07/338,082                   10/09/90
4,961,260                   07/310,242                   10/09/90
4,961,263                   07/448,625                   10/09/90
4,961,264                   07/313,381                   10/09/90
4,961,276                   07/206,436                   10/09/90
4,961,278                   07/326,495                   10/09/90
4,961,279                   07/359,204                   10/09/90
4,961,281                   07/438,787                   10/09/90
4,961,285                   07/312,607                   10/09/90
4,961,286                   07/366,497                   10/09/90
4,961,287                   07/399,889                   10/09/90
4,961,288                   07/250,843                   10/09/90
4,961,289                   07/410,015                   10/09/90
4,961,292                   07/333,233                   10/09/90
4,961,296                   07/401,500                   10/09/90
4,961,300                   07/291,789                   10/09/90
4,961,309                   07/341,801                   10/09/90
4,961,319                   07/289,177                   10/09/90
4,961,322                   07/291,144                   10/09/90
4,961,327                   07/360,686                   10/09/90
4,961,329                   07/407,966                   10/09/90
4,961,332                   07/197,837                   10/09/90
4,961,334                   06/825,668                   10/09/90
4,961,343                   07/382,900                   10/09/90
4,961,345                   07/129,521                   10/09/90
4,961,349                   07/408,076                   10/09/90
4,961,351                   07/311,526                   10/09/90
4,961,354                   06/833,155                   10/09/90
4,961,358                   07/330,691                   10/09/90
4,961,360                   07/250,519                   10/09/90
4,961,364                   07/158,562                   10/09/90
4,961,373                   07/243,905                   10/09/90
4,961,374                   07/493,366                   10/09/90
4,961,381                   07/350,829                   10/09/90
4,961,382                   07/164,612                   10/09/90
4,961,389                   07/410,400                   10/09/90
4,961,392                   07/319,347                   10/09/90
4,961,394                   07/328,124                   10/09/90
4,961,411                   07/191,132                   10/09/90
4,961,416                   07/364,156                   10/09/90
4,961,426                   07/234,229                   10/09/90
4,961,428                   07/189,156                   10/09/90
4,961,431                   07/149,190                   10/09/90
4,961,432                   07/308,763                   10/09/90
4,961,443                   07/449,687                   10/09/90
4,961,444                   07/382,609                   10/09/90
4,961,451                   07/225,937                   10/09/90
4,961,452                   07/346,692                   10/09/90
4,961,453                   07/360,441                   10/09/90
4,961,461                   07/207,573                   10/09/90
4,961,463                   07/343,219                   10/09/90
4,961,464                   07/408,267                   10/09/90
4,961,469                   07/341,819                   10/09/90
4,961,471                   07/380,889                   10/09/90
4,961,472                   07/377,126                   10/09/90
4,961,478                   07/326,385                   10/09/90
4,961,484                   07/340,547                   10/09/90
4,961,488                   07/363,976                   10/09/90
4,961,490                   07/158,617                   10/09/90
4,961,500                   07/452,056                   10/09/90
4,961,505                   07/464,547                   10/09/90
4,961,506                   07/207,254                   10/09/90
4,961,515                   07/413,118                   10/09/90
4,961,521                   07/439,623                   10/09/90
4,961,528                   07/326,583                   10/09/90
4,961,531                   07/247,235                   10/09/90
4,961,533                   07/428,408                   10/09/90
4,961,538                   07/179,078                   10/09/90
4,961,539                   07/388,020                   10/09/90
4,961,546                   07/417,956                   10/09/90
4,961,550                   07/301,774                   10/09/90
4,961,556                   07/322,366                   10/09/90
4,961,559                   07/451,835                   10/09/90
4,961,567                   07/319,682                   10/09/90
4,961,582                   07/408,182                   10/09/90
4,961,590                   07/310,266                   10/09/90
4,961,591                   07/288,944                   10/09/90
4,961,593                   07/271,899                   10/09/90
4,961,596                   07/351,366                   10/09/90
4,961,599                   07/229,969                   10/09/90
4,961,606                   07/249,779                   10/09/90
4,961,609                   07/383,931                   10/09/90
4,961,617                   07/381,954                   10/09/90
4,961,618                   07/361,078                   10/09/90
4,961,622                   07/312,624                   10/09/90
4,961,626                   07/313,686                   10/09/90
4,961,634                   07/365,795                   10/09/90
4,961,637                   07/258,170                   10/09/90
4,961,638                   07/318,953                   10/09/90
4,961,641                   07/443,721                   10/09/90
4,961,643                   07/307,538                   10/09/90
4,961,654                   07/335,467                   10/09/90
4,961,658                   07/206,315                   10/09/90
4,961,661                   06/904,347                   10/09/90
4,961,663                   07/434,753                   10/09/90
4,961,668                   07/429,196                   10/09/90
4,961,669                   07/304,451                   10/09/90
4,961,671                   07/484,479                   10/09/90
4,961,676                   07/277,285                   10/09/90
4,961,682                   07/247,527                   10/09/90
4,961,688                   07/294,409                   10/09/90
4,961,695                   07/316,705                   10/09/90
4,961,715                   07/294,750                   10/09/90
4,961,721                   07/327,193                   10/09/90
4,961,730                   07/414,005                   10/09/90
4,961,742                   07/328,491                   10/09/90
4,961,747                   07/279,600                   10/09/90
4,961,755                   07/286,547                   10/09/90
4,961,763                   07/340,368                   10/09/90
4,961,765                   07/338,876                   10/09/90
4,961,766                   07/396,037                   10/09/90
4,961,767                   07/373,628                   10/09/90
4,961,771                   07/290,664                   10/09/90
4,961,774                   07/153,718                   10/09/90
4,961,783                   07/204,160                   10/09/90
4,961,786                   07/345,874                   10/09/90
4,961,796                   07/319,089                   10/09/90
4,961,798                   07/415,581                   10/09/90
4,961,799                   07/336,200                   10/09/90
4,961,802                   07/268,496                   10/09/90
4,961,814                   07/344,604                   10/09/90
4,961,815                   07/303,440                   10/09/90
4,961,818                   06/747,292                   10/09/90
4,961,826                   06/897,986                   10/09/90
4,961,829                   07/251,813                   10/09/90
4,961,842                   07/267,943                   10/09/90
4,961,844                   07/332,020                   10/09/90
4,961,848                   07/352,957                   10/09/90
4,961,853                   07/378,571                   10/09/90
4,961,863                   07/321,617                   10/09/90
4,961,864                   07/316,288                   10/09/90
4,961,866                   07/179,091                   10/09/90
4,961,867                   07/310,798                   10/09/90
4,961,871                   07/436,274                   10/09/90
4,961,873                   07/398,346                   10/09/90
4,961,879                   07/204,137                   10/09/90
4,961,880                   07/239,146                   10/09/90
4,961,886                   07/204,436                   10/09/90
4,961,897                   07/308,500                   10/09/90
4,961,901                   07/339,747                   10/09/90
4,961,907                   07/322,262                   10/09/90
4,961,908                   07/119,110                   10/09/90
4,961,912                   07/140,059                   10/09/90
4,961,913                   07/238,735                   10/09/90
4,961,914                   07/218,858                   10/09/90
4,961,915                   06/815,054                   10/09/90
4,961,919                   07/294,311                   10/09/90
4,961,921                   07/341,322                   10/09/90
4,961,930                   07/188,291                   10/09/90
4,961,939                   07/360,630                   10/09/90
4,961,946                   07/322,741                   10/09/90
4,961,948                   07/313,998                   10/09/90
4,961,949                   07/288,864                   10/09/90
4,961,950                   07/400,399                   10/09/90
4,961,952                   07/211,230                   10/09/90
4,961,954                   07/304,479                   10/09/90
4,961,960                   06/600,042                   10/09/90
4,961,966                   07/477,390                   10/09/90
4,961,968                   07/329,618                   10/09/90
4,961,971                   07/285,922                   10/09/90
4,961,972                   07/018,599                   10/09/90
4,961,984                   07/373,581                   10/09/90
4,962,002                   07/373,693                   10/09/90
4,962,006                   07/449,072                   10/09/90
4,962,021                   06/876,473                   10/09/90
4,962,022                   06/910,413                   10/09/90
4,962,024                   07/230,933                   10/09/90
4,962,035                   07/127,214                   10/09/90
4,962,041                   07/330,151                   10/09/90
4,962,054                   07/328,880                   10/09/90
4,962,063                   07/321,943                   10/09/90
4,962,065                   07/478,028                   10/09/90
4,962,068                   07/466,086                   10/09/90
4,962,070                   07/125,221                   10/09/90
4,962,071                   07/346,429                   10/09/90
4,962,077                   07/378,565                   10/09/90
4,962,079                   07/286,048                   10/09/90
4,962,092                   07/361,890                   10/09/90
4,962,096                   07/172,581                   10/09/90
4,962,101                   07/396,163                   10/09/90
4,962,102                   07/378,894                   10/09/90
4,962,106                   07/308,349                   10/09/90
4,962,108                   07/282,169                   10/09/90
4,962,118                   07/311,327                   10/09/90
4,962,123                   07/237,748                   10/09/90
4,962,125                   07/235,654                   10/09/90
4,962,129                   06/834,689                   10/09/90
4,962,136                   07/185,535                   10/09/90
4,962,137                   07/326,932                   10/09/90
4,962,139                   07/150,375                   10/09/90
4,962,143                   07/424,638                   10/09/90
4,962,145                   07/282,888                   10/09/90
4,962,146                   07/259,455                   10/09/90
4,962,147                   07/199,553                   10/09/90
4,962,148                   07/242,025                   10/09/90
4,962,153                   07/466,542                   10/09/90
4,962,166                   07/233,935                   10/09/90
4,962,167                   07/271,108                   10/09/90
4,962,176                   06/945,126                   10/09/90
4,962,178                   07/266,555                   10/09/90
4,962,182                   07/289,272                   10/09/90
4,962,185                   07/415,834                   10/09/90
4,962,196                   07/331,072                   10/09/90
4,962,204                   07/315,158                   10/09/90
4,962,205                   07/392,482                   10/09/90
4,962,209                   07/020,960                   10/09/90
4,962,211                   07/445,977                   10/09/90
4,962,215                   07/285,532                   10/09/90
4,962,216                   07/417,222                   10/09/90
4,962,217                   07/460,788                   10/09/90
4,962,225                   07/176,597                   10/09/90
4,962,234                   07/201,270                   10/09/90
4,962,238                   07/417,112                   10/09/90
4,962,239                   07/456,702                   10/09/90
4,962,240                   07/321,067                   10/09/90
4,962,249                   07/480,709                   10/09/90
4,962,253                   07/397,150                   10/09/90
4,962,270                   07/315,867                   10/09/90
4,962,291                   07/403,440                   10/09/90
4,962,293                   07/408,566                   10/09/90
4,962,294                   07/322,955                   10/09/90
4,962,300                   06/239,608                   10/09/90
4,962,303                   07/371,884                   10/09/90
4,962,305                   07/387,349                   10/09/90
4,962,306                   07/444,926                   10/09/90
4,962,307                   07/340,534                   10/09/90
4,962,308                   07/229,591                   10/09/90
4,962,315                   07/291,159                   10/09/90
4,962,319                   07/400,217                   10/09/90
4,962,326                   07/222,842                   10/09/90
4,962,330                   07/326,756                   10/09/90
4,962,349                   07/296,268                   10/09/90
4,962,350                   07/398,817                   10/09/90
4,962,355                   07/263,306                   10/09/90
4,962,360                   07/354,663                   10/09/90
4,962,367                   07/291,494                   10/09/90
4,962,369                   07/308,771                   10/09/90
4,962,371                   07/270,555                   10/09/90
4,962,384                   07/443,054                   10/09/90
4,962,385                   07/306,847                   10/09/90
4,962,387                   07/355,669                   10/09/90
4,962,416                   07/182,639                   10/09/90
4,962,417                   07/193,549                   10/09/90
4,962,425                   07/263,023                   10/09/90
4,962,426                   07/334,330                   10/09/90
4,962,429                   07/297,823                   10/09/90
4,962,431                   07/311,778                   10/09/90
4,962,436                   07/324,354                   10/09/90
4,962,438                   07/336,193                   10/09/90
4,962,439                   07/301,975                   10/09/90
4,962,445                   07/341,602                   10/09/90
4,962,448                   07/251,636                   10/09/90
4,962,453                   07/307,765                   10/09/90
4,962,460                   07/309,800                   10/09/90
4,962,471                   07/260,155                   10/09/90
4,962,472                   07/273,035                   10/09/90
4,962,473                   07/283,439                   10/09/90
4,962,474                   07/121,611                   10/09/90
4,962,477                   06/505,617                   10/09/90
4,962,479                   07/195,759                   10/09/90
4,962,486                   07/204,135                   10/09/90
4,962,490                   07/467,109                   10/09/90
4,962,491                   07/478,227                   10/09/90
4,962,496                   07/260,343                   10/09/90
4,962,513                   07/430,369                   10/09/90
4,962,518                   07/235,946                   10/09/90
4,962,521                   07/285,816                   10/09/90
4,962,528                   07/355,226                   10/09/90
4,962,529                   06/870,297                   10/09/90

                   PATENTS WHICH EXPIRED ON October 11, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

5,353,439                   07/972,217                   10/11/94
5,353,440                   08/012,650                   10/11/94
5,353,441                   08/120,057                   10/11/94
5,353,443                   08/095,003                   10/11/94
5,353,444                   08/062,132                   10/11/94
5,353,446                   08/132,098                   10/11/94
5,353,447                   08/197,616                   10/11/94
5,353,448                   07/906,418                   10/11/94
5,353,450                   07/910,142                   10/11/94
5,353,453                   08/103,284                   10/11/94
5,353,454                   08/110,890                   10/11/94
5,353,456                   07/962,417                   10/11/94
5,353,457                   08/132,673                   10/11/94
5,353,458                   07/821,222                   10/11/94
5,353,460                   08/125,784                   10/11/94
5,353,461                   08/123,054                   10/11/94
5,353,465                   07/954,493                   10/11/94
5,353,470                   08/029,023                   10/11/94
5,353,471                   07/992,526                   10/11/94
5,353,472                   07/997,022                   10/11/94
5,353,473                   08/045,302                   10/11/94
5,353,476                   08/035,416                   10/11/94
5,353,477                   07/927,400                   10/11/94
5,353,482                   08/040,773                   10/11/94
5,353,483                   08/085,624                   10/11/94
5,353,489                   08/030,810                   10/11/94
5,353,494                   07/970,712                   10/11/94
5,353,502                   07/819,333                   10/11/94
5,353,504                   08/055,186                   10/11/94
5,353,506                   07/996,076                   10/11/94
5,353,509                   08/097,553                   10/11/94
5,353,511                   07/989,567                   10/11/94
5,353,515                   08/219,072                   10/11/94
5,353,518                   08/072,053                   10/11/94
5,353,519                   07/969,570                   10/11/94
5,353,522                   08/095,561                   10/11/94
5,353,524                   08/150,597                   10/11/94
5,353,527                   08/131,385                   10/11/94
5,353,528                   08/150,797                   10/11/94
5,353,532                   07/902,918                   10/11/94
5,353,533                   08/004,911                   10/11/94
5,353,540                   08/126,098                   10/11/94
5,353,542                   08/023,937                   10/11/94
5,353,546                   08/081,982                   10/11/94
5,353,547                   08/099,317                   10/11/94
5,353,555                   07/950,995                   10/11/94
5,353,559                   07/748,628                   10/11/94
5,353,562                   08/179,511                   10/11/94
5,353,569                   07/983,061                   10/11/94
5,353,576                   07/283,198                   10/11/94
5,353,577                   08/106,044                   10/11/94
5,353,578                   08/025,025                   10/11/94
5,353,587                   08/221,972                   10/11/94
5,353,593                   08/028,526                   10/11/94
5,353,596                   08/020,791                   10/11/94
5,353,597                   08/144,911                   10/11/94
5,353,600                   08/159,385                   10/11/94
5,353,602                   08/036,901                   10/11/94
5,353,605                   08/113,129                   10/11/94
5,353,607                   08/001,324                   10/11/94
5,353,609                   08/012,763                   10/11/94
5,353,616                   07/690,528                   10/11/94
5,353,619                   07/983,825                   10/11/94
5,353,633                   07/773,902                   10/11/94
5,353,639                   08/063,742                   10/11/94
5,353,665                   07/964,646                   10/11/94
5,353,671                   08/111,289                   10/11/94
5,353,677                   08/114,884                   10/11/94
5,353,678                   08/064,960                   10/11/94
5,353,680                   08/158,804                   10/11/94
5,353,690                   08/026,433                   10/11/94
5,353,691                   08/047,976                   10/11/94
5,353,694                   08/105,510                   10/11/94
5,353,701                   08/102,700                   10/11/94
5,353,703                   07/952,689                   10/11/94
5,353,704                   08/089,731                   10/11/94
5,353,709                   07/925,074                   10/11/94
5,353,710                   07/957,550                   10/11/94
5,353,715                   07/924,712                   10/11/94
5,353,716                   07/854,426                   10/11/94
5,353,717                   08/104,918                   10/11/94
5,353,718                   07/970,726                   10/11/94
5,353,720                   08/077,379                   10/11/94
5,353,724                   08/069,736                   10/11/94
5,353,727                   07/866,577                   10/11/94
5,353,738                   08/020,679                   10/11/94
5,353,739                   08/126,889                   10/11/94
5,353,742                   08/134,722                   10/11/94
5,353,746                   08/063,877                   10/11/94
5,353,747                   08/206,330                   10/11/94
5,353,756                   08/092,439                   10/11/94
5,353,758                   07/901,428                   10/11/94
5,353,762                   08/059,995                   10/11/94
5,353,776                   08/034,605                   10/11/94
5,353,778                   08/065,365                   10/11/94
5,353,784                   08/042,295                   10/11/94
5,353,787                   08/074,792                   10/11/94
5,353,793                   07/797,538                   10/11/94
5,353,796                   07/722,914                   10/11/94
5,353,809                   08/046,192                   10/11/94
5,353,821                   08/141,396                   10/11/94
5,353,824                   08/166,700                   10/11/94
5,353,826                   08/007,198                   10/11/94
5,353,828                   08/139,535                   10/11/94
5,353,830                   07/838,257                   10/11/94
5,353,843                   07/988,748                   10/11/94
5,353,858                   07/919,790                   10/11/94
5,353,861                   07/865,492                   10/11/94
5,353,863                   08/206,941                   10/11/94
5,353,864                   08/024,702                   10/11/94
5,353,867                   08/037,942                   10/11/94
5,353,868                   08/049,823                   10/11/94
5,353,870                   08/068,143                   10/11/94
5,353,878                   07/990,788                   10/11/94
5,353,883                   08/083,334                   10/11/94
5,353,885                   08/089,356                   10/11/94
5,353,887                   08/013,581                   10/11/94
5,353,892                   08/136,124                   10/11/94
5,353,895                   08/074,425                   10/11/94
5,353,900                   08/024,511                   10/11/94
5,353,914                   08/052,759                   10/11/94
5,353,919                   08/150,459                   10/11/94
5,353,924                   08/080,476                   10/11/94
5,353,931                   07/940,043                   10/11/94
5,353,936                   08/148,882                   10/11/94
5,353,939                   07/952,245                   10/11/94
5,353,942                   08/101,035                   10/11/94
5,353,945                   07/949,572                   10/11/94
5,353,954                   08/077,856                   10/11/94
5,353,956                   08/025,164                   10/11/94
5,353,962                   08/005,275                   10/11/94
5,353,971                   08/058,148                   10/11/94
5,353,972                   08/070,928                   10/11/94
5,353,973                   08/035,738                   10/11/94
5,353,981                   07/983,917                   10/11/94
5,353,990                   08/034,148                   10/11/94
5,354,000                   08/143,491                   10/11/94
5,354,003                   08/137,839                   10/11/94
5,354,005                   07/635,114                   10/11/94
5,354,009                   08/028,361                   10/11/94
5,354,011                   08/022,891                   10/11/94
5,354,015                   08/105,350                   10/11/94
5,354,020                   08/069,124                   10/11/94
5,354,023                   08/019,679                   10/11/94
5,354,029                   08/030,963                   10/11/94
5,354,034                   08/144,253                   10/11/94
5,354,039                   08/159,936                   10/11/94
5,354,040                   07/981,223                   10/11/94
5,354,046                   08/142,788                   10/11/94
5,354,052                   08/032,980                   10/11/94
5,354,057                   07/952,924                   10/11/94
5,354,063                   07/984,948                   10/11/94
5,354,064                   08/003,390                   10/11/94
5,354,066                   08/170,711                   10/11/94
5,354,067                   08/084,618                   10/11/94
5,354,068                   07/781,114                   10/11/94
5,354,075                   08/145,818                   10/11/94
5,354,077                   08/064,503                   10/11/94
5,354,080                   08/065,198                   10/11/94
5,354,081                   08/011,214                   10/11/94
5,354,088                   08/034,826                   10/11/94
5,354,089                   08/062,112                   10/11/94
5,354,098                   08/157,418                   10/11/94
5,354,100                   07/854,289                   10/11/94
5,354,111                   08/102,247                   10/11/94
5,354,117                   08/075,613                   10/11/94
5,354,121                   08/019,428                   10/11/94
5,354,122                   07/857,938                   10/11/94
5,354,125                   08/002,388                   10/11/94
5,354,126                   08/001,749                   10/11/94
5,354,128                   08/093,354                   10/11/94
5,354,130                   07/917,116                   10/11/94
5,354,140                   08/138,756                   10/11/94
5,354,143                   07/978,907                   10/11/94
5,354,144                   08/146,443                   10/11/94
5,354,145                   07/804,650                   10/11/94
5,354,148                   07/953,797                   10/11/94
5,354,149                   08/093,524                   10/11/94
5,354,154                   07/946,968                   10/11/94
5,354,160                   07/927,075                   10/11/94
5,354,163                   08/003,214                   10/11/94
5,354,172                   07/985,473                   10/11/94
5,354,177                   08/159,811                   10/11/94
5,354,191                   08/131,403                   10/11/94
5,354,197                   08/078,635                   10/11/94
5,354,203                   08/096,930                   10/11/94
5,354,212                   08/029,566                   10/11/94
5,354,215                   08/082,232                   10/11/94
5,354,219                   08/075,584                   10/11/94
5,354,224                   08/002,710                   10/11/94
5,354,225                   08/139,763                   10/11/94
5,354,234                   08/070,987                   10/11/94
5,354,235                   08/164,866                   10/11/94
5,354,236                   08/042,511                   10/11/94
5,354,245                   08/089,242                   10/11/94
5,354,261                   07/902,687                   10/11/94
5,354,263                   08/078,816                   10/11/94
5,354,271                   08/102,420                   10/11/94
5,354,280                   08/019,548                   10/11/94
5,354,284                   07/895,904                   10/11/94
5,354,285                   08/113,354                   10/11/94
5,354,292                   08/024,934                   10/11/94
5,354,301                   08/033,582                   10/11/94
5,354,303                   07/836,087                   10/11/94
5,354,307                   08/136,096                   10/11/94
5,354,313                   08/065,628                   10/11/94
5,354,333                   07/979,368                   10/11/94
5,354,334                   07/986,831                   10/11/94
5,354,344                   07/921,695                   10/11/94
5,354,347                   08/038,896                   10/11/94
5,354,354                   07/955,952                   10/11/94
5,354,366                   08/127,753                   10/11/94
5,354,375                   08/134,366                   10/11/94
5,354,378                   07/910,686                   10/11/94
5,354,379                   08/014,768                   10/11/94
5,354,390                   08/041,441                   10/11/94
5,354,395                   08/081,425                   10/11/94
5,354,396                   08/022,570                   10/11/94
5,354,402                   08/080,555                   10/11/94
5,354,403                   08/203,844                   10/11/94
5,354,423                   08/024,058                   10/11/94
5,354,427                   08/003,213                   10/11/94
5,354,436                   07/829,032                   10/11/94
5,354,439                   07/730,171                   10/11/94
5,354,440                   07/277,566                   10/11/94
5,354,441                   08/096,860                   10/11/94
5,354,442                   07/886,289                   10/11/94
5,354,445                   08/095,046                   10/11/94
5,354,452                   07/962,549                   10/11/94
5,354,454                   08/049,614                   10/11/94
5,354,458                   07/871,041                   10/11/94
5,354,462                   08/196,798                   10/11/94
5,354,463                   07/904,403                   10/11/94
5,354,464                   07/494,142                   10/11/94
5,354,468                   07/880,933                   10/11/94
5,354,469                   08/076,386                   10/11/94
5,354,471                   07/963,478                   10/11/94
5,354,478                   08/074,173                   10/11/94
5,354,486                   08/114,115                   10/11/94
5,354,487                   07/681,874                   10/11/94
5,354,492                   07/940,677                   10/11/94
5,354,504                   07/746,985                   10/11/94
5,354,506                   07/413,965                   10/11/94
5,354,507                   08/007,116                   10/11/94
5,354,508                   08/160,534                   10/11/94
5,354,509                   08/142,783                   10/11/94
5,354,515                   08/001,776                   10/11/94
5,354,523                   07/922,683                   10/11/94
5,354,528                   07/811,340                   10/11/94
5,354,529                   07/617,143                   10/11/94
5,354,539                   08/150,716                   10/11/94
5,354,541                   08/074,212                   10/11/94
5,354,550                   08/044,690                   10/11/94
5,354,553                   07/986,916                   10/11/94
5,354,582                   07/979,197                   10/11/94
5,354,583                   07/972,778                   10/11/94
5,354,584                   08/059,245                   10/11/94
5,354,585                   07/834,822                   10/11/94
5,354,589                   07/946,767                   10/11/94
5,354,596                   07/625,549                   10/11/94
5,354,615                   07/545,328                   10/11/94
5,354,665                   07/959,550                   10/11/94
5,354,676                   07/768,881                   10/11/94
5,354,679                   07/904,258                   10/11/94
5,354,692                   07/941,667                   10/11/94
5,354,707                   08/149,394                   10/11/94
5,354,724                   08/099,008                   10/11/94
5,354,728                   08/107,190                   10/11/94
5,354,729                   08/089,576                   10/11/94
5,354,746                   08/069,503                   10/11/94
5,354,754                   08/046,917                   10/11/94
5,354,758                   07/991,365                   10/11/94
5,354,759                   08/008,646                   10/11/94
5,354,761                   08/069,660                   10/11/94
5,354,764                   07/970,753                   10/11/94
5,354,770                   08/015,674                   10/11/94
5,354,773                   07/849,020                   10/11/94
5,354,777                   08/021,407                   10/11/94
5,354,779                   07/983,984                   10/11/94
5,354,786                   08/057,078                   10/11/94
5,354,800                   07/967,741                   10/11/94
5,354,804                   08/117,348                   10/11/94
5,354,806                   07/761,569                   10/11/94
5,354,817                   07/870,953                   10/11/94
5,354,823                   08/103,944                   10/11/94
5,354,836                   08/116,000                   10/11/94
5,354,851                   08/040,891                   10/11/94
5,354,861                   07/971,507                   10/11/94
5,354,864                   07/886,980                   10/11/94
5,354,865                   07/942,870                   10/11/94
5,354,871                   08/046,727                   10/11/94
5,354,872                   08/069,271                   10/11/94
5,354,874                   08/159,145                   10/11/94
5,354,876                   08/094,988                   10/11/94
5,354,882                   07/906,656                   10/11/94
5,354,887                   07/626,833                   10/11/94
5,354,892                   08/008,031                   10/11/94
5,354,895                   07/996,394                   10/11/94
5,354,896                   08/012,104                   10/11/94
5,354,913                   08/085,166                   10/11/94
5,354,914                   08/009,127                   10/11/94
5,354,916                   08/187,351                   10/11/94
5,354,919                   08/084,028                   10/11/94
5,354,921                   08/112,054                   10/11/94
5,354,929                   08/128,611                   10/11/94
5,354,939                   08/169,954                   10/11/94
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