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 September 30, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,613,995                   06/735,771                   09/30/86
4,614,002                   06/701,523                   09/30/86
4,614,009                   06/694,283                   09/30/86
4,614,012                   06/709,283                   09/30/86
4,614,016                   06/768,251                   09/30/86
4,614,020                   06/498,209                   09/30/86
4,614,025                   06/686,355                   09/30/86
4,614,029                   06/718,446                   09/30/86
4,614,039                   06/686,940                   09/30/86
4,614,043                   06/743,998                   09/30/86
4,614,052                   06/750,100                   09/30/86
4,614,063                   06/720,545                   09/30/86
4,614,065                   06/739,528                   09/30/86
4,614,067                   06/739,430                   09/30/86
4,614,069                   06/686,537                   09/30/86
4,614,077                   06/724,108                   09/30/86
4,614,078                   06/759,032                   09/30/86
4,614,079                   06/634,628                   09/30/86
4,614,083                   06/711,337                   09/30/86
4,614,088                   06/741,844                   09/30/86
4,614,090                   06/823,043                   09/30/86
4,614,091                   06/733,571                   09/30/86
4,614,100                   06/650,360                   09/30/86
4,614,101                   06/326,187                   09/30/86
4,614,104                   06/818,406                   09/30/86
4,614,105                   06/761,380                   09/30/86
4,614,113                   06/718,360                   09/30/86
4,614,114                   06/580,200                   09/30/86
4,614,116                   06/697,674                   09/30/86
4,614,117                   06/702,504                   09/30/86
4,614,119                   06/709,870                   09/30/86
4,614,123                   06/690,729                   09/30/86
4,614,137                   06/513,631                   09/30/86
4,614,138                   06/738,842                   09/30/86
4,614,140                   06/615,608                   09/30/86
4,614,143                   06/778,091                   09/30/86
4,614,145                   06/776,773                   09/30/86
4,614,146                   06/610,310                   09/30/86
4,614,148                   06/707,427                   09/30/86
4,614,154                   06/632,964                   09/30/86
4,614,155                   06/799,731                   09/30/86
4,614,157                   06/657,445                   09/30/86
4,614,159                   06/757,555                   09/30/86
4,614,166                   06/666,115                   09/30/86
4,614,173                   06/613,356                   09/30/86
4,614,176                   06/790,683                   09/30/86
4,614,189                   06/646,776                   09/30/86
4,614,190                   06/495,354                   09/30/86
4,614,191                   06/529,009                   09/30/86
4,614,206                   06/797,886                   09/30/86
4,614,209                   06/657,351                   09/30/86
4,614,211                   06/620,869                   09/30/86
4,614,212                   06/616,619                   09/30/86
4,614,216                   06/703,751                   09/30/86
4,614,218                   06/471,995                   09/30/86
4,614,222                   06/610,721                   09/30/86
4,614,223                   06/378,880                   09/30/86
4,614,226                   06/567,681                   09/30/86
4,614,229                   06/506,036                   09/30/86
4,614,232                   06/711,692                   09/30/86
4,614,233                   06/659,696                   09/30/86
4,614,244                   06/770,672                   09/30/86
4,614,246                   06/754,596                   09/30/86
4,614,247                   06/665,068                   09/30/86
4,614,249                   06/565,235                   09/30/86
4,614,254                   06/675,161                   09/30/86
4,614,255                   06/507,159                   09/30/86
4,614,274                   06/606,647                   09/30/86
4,614,277                   06/736,677                   09/30/86
4,614,285                   06/630,929                   09/30/86
4,614,288                   06/696,453                   09/30/86
4,614,300                   06/595,726                   09/30/86
4,614,303                   06/625,636                   09/30/86
4,614,304                   06/677,827                   09/30/86
4,614,307                   06/693,289                   09/30/86
4,614,309                   06/651,868                   09/30/86
4,614,314                   06/635,184                   09/30/86
4,614,315                   06/705,753                   09/30/86
4,614,321                   06/728,273                   09/30/86
4,614,326                   06/690,046                   09/30/86
4,614,334                   06/668,348                   09/30/86
4,614,346                   06/357,498                   09/30/86
4,614,362                   06/670,572                   09/30/86
4,614,371                   06/632,716                   09/30/86
4,614,387                   06/728,144                   09/30/86
4,614,388                   06/818,906                   09/30/86
4,614,394                   06/675,851                   09/30/86
4,614,397                   06/809,620                   09/30/86
4,614,406                   06/741,186                   09/30/86
4,614,413                   06/697,923                   09/30/86
4,614,419                   06/652,251                   09/30/86
4,614,425                   06/602,337                   09/30/86
4,614,429                   06/610,142                   09/30/86
4,614,438                   06/718,865                   09/30/86
4,614,449                   06/643,997                   09/30/86
4,614,461                   06/772,743                   09/30/86
4,614,464                   06/754,150                   09/30/86
4,614,465                   06/576,734                   09/30/86
4,614,469                   06/645,866                   09/30/86
4,614,470                   06/757,737                   09/30/86
4,614,472                   06/657,771                   09/30/86
4,614,479                   06/785,079                   09/30/86
4,614,488                   06/751,013                   09/30/86
4,614,489                   06/689,284                   09/30/86
4,614,490                   06/718,804                   09/30/86
4,614,495                   06/688,589                   09/30/86
4,614,498                   06/702,713                   09/30/86
4,614,500                   06/762,013                   09/30/86
4,614,508                   06/707,254                   09/30/86
4,614,528                   06/747,878                   09/30/86
4,614,531                   06/682,326                   09/30/86
4,614,543                   06/696,978                   09/30/86
4,614,549                   06/690,364                   09/30/86
4,614,551                   06/740,352                   09/30/86
4,614,560                   06/726,192                   09/30/86
4,614,561                   06/715,859                   09/30/86
4,614,564                   06/678,202                   09/30/86
4,614,575                   06/673,041                   09/30/86
4,614,576                   06/790,275                   09/30/86
4,614,587                   06/717,673                   09/30/86
4,614,594                   06/773,681                   09/30/86
4,614,606                   06/666,393                   09/30/86
4,614,607                   06/711,943                   09/30/86
4,614,609                   06/613,974                   09/30/86
4,614,613                   06/628,773                   09/30/86
4,614,614                   06/592,312                   09/30/86
4,614,616                   06/536,076                   09/30/86
4,614,627                   06/530,129                   09/30/86
4,614,629                   06/574,319                   09/30/86
4,614,632                   06/687,582                   09/30/86
4,614,638                   06/805,413                   09/30/86
4,614,641                   06/746,322                   09/30/86
4,614,647                   06/660,390                   09/30/86
4,614,655                   06/708,220                   09/30/86
4,614,656                   06/733,686                   09/30/86
4,614,659                   06/718,790                   09/30/86
4,614,661                   06/714,627                   09/30/86
4,614,666                   06/699,028                   09/30/86
4,614,668                   06/627,284                   09/30/86
4,614,680                   06/600,376                   09/30/86
4,614,683                   06/728,881                   09/30/86
4,614,689                   06/603,452                   09/30/86
4,614,690                   06/723,891                   09/30/86
4,614,695                   06/675,060                   09/30/86
4,614,698                   06/802,315                   09/30/86
4,614,706                   06/606,216                   09/30/86
4,614,718                   06/640,892                   09/30/86
4,614,719                   06/489,409                   09/30/86
4,614,728                   06/694,973                   09/30/86
4,614,733                   06/646,433                   09/30/86
4,614,734                   06/624,310                   09/30/86
4,614,738                   06/478,620                   09/30/86
4,614,749                   06/812,707                   09/30/86
4,614,751                   06/695,648                   09/30/86
4,614,756                   06/761,445                   09/30/86
4,614,768                   06/734,988                   09/30/86
4,614,772                   06/780,334                   09/30/86
4,614,780                   06/673,298                   09/30/86
4,614,781                   06/668,822                   09/30/86
4,614,784                   06/597,562                   09/30/86
4,614,785                   06/765,472                   09/30/86
4,614,788                   06/770,138                   09/30/86
4,614,790                   06/668,044                   09/30/86
4,614,791                   06/668,528                   09/30/86
4,614,803                   06/738,577                   09/30/86
4,614,816                   06/541,379                   09/30/86
4,614,823                   06/607,832                   09/30/86
4,614,827                   06/629,358                   09/30/86
4,614,842                   06/540,462                   09/30/86
4,614,843                   06/671,526                   09/30/86
4,614,849                   06/724,818                   09/30/86
4,614,853                   06/787,035                   09/30/86
4,614,855                   06/608,355                   09/30/86
4,614,862                   06/631,023                   09/30/86
4,614,871                   06/666,990                   09/30/86
4,614,876                   06/631,933                   09/30/86
4,614,877                   06/712,444                   09/30/86
4,614,883                   06/556,759                   09/30/86
4,614,885                   06/630,544                   09/30/86
4,614,891                   06/686,401                   09/30/86
4,614,893                   06/802,080                   09/30/86
4,614,896                   06/673,242                   09/30/86
4,614,908                   06/600,061                   09/30/86
4,614,911                   06/680,789                   09/30/86
4,614,919                   06/627,699                   09/30/86
4,614,924                   06/468,926                   09/30/86
4,614,930                   06/715,709                   09/30/86
4,614,934                   06/578,787                   09/30/86
4,614,935                   06/685,679                   09/30/86
4,614,937                   06/457,439                   09/30/86
4,614,943                   06/511,517                   09/30/86
4,614,952                   06/650,406                   09/30/86
4,614,954                   06/649,851                   09/30/86
4,614,958                   06/748,703                   09/30/86
4,614,968                   06/349,062                   09/30/86
4,614,971                   06/455,658                   09/30/86
4,614,972                   06/580,535                   09/30/86
4,614,975                   06/791,004                   09/30/86
4,614,978                   06/340,861                   09/30/86
4,614,979                   06/530,033                   09/30/86
4,614,982                   06/599,175                   09/30/86
4,614,983                   06/524,848                   09/30/86
4,614,992                   06/768,736                   09/30/86
4,614,998                   06/690,859                   09/30/86
4,615,004                   06/681,047                   09/30/86
4,615,010                   06/508,393                   09/30/86
4,615,011                   06/562,754                   09/30/86
4,615,014                   06/601,236                   09/30/86
4,615,017                   06/533,397                   09/30/86
4,615,018                   06/592,594                   09/30/86
4,615,024                   06/475,109                   09/30/86
4,615,026                   06/572,442                   09/30/86
4,615,042                   06/554,139                   09/30/86

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

Patent                     Application                      Issue
Number                        Number                         Date

4,958,385                   07/329,275                   09/25/90
4,958,388                   07/353,034                   09/25/90
4,958,389                   07/313,181                   09/25/90
4,958,390                   07/267,525                   09/25/90
4,958,391                   07/299,535                   09/25/90
4,958,394                   07/060,412                   09/25/90
4,958,395                   07/402,818                   09/25/90
4,958,405                   07/353,073                   09/25/90
4,958,409                   07/433,023                   09/25/90
4,958,411                   07/448,793                   09/25/90
4,958,413                   07/285,215                   09/25/90
4,958,417                   07/500,183                   09/25/90
4,958,435                   07/282,236                   09/25/90
4,958,438                   07/332,077                   09/25/90
4,958,439                   07/444,005                   09/25/90
4,958,440                   07/338,672                   09/25/90
4,958,454                   07/380,249                   09/25/90
4,958,458                   07/315,400                   09/25/90
4,958,463                   07/442,484                   09/25/90
4,958,465                   07/413,128                   09/25/90
4,958,466                   07/323,537                   09/25/90
4,958,468                   06/860,716                   09/25/90
4,958,470                   07/301,416                   09/25/90
4,958,471                   07/407,965                   09/25/90
4,958,475                   07/233,538                   09/25/90
4,958,483                   07/489,734                   09/25/90
4,958,484                   07/386,155                   09/25/90
4,958,491                   07/174,121                   09/25/90
4,958,495                   07/267,078                   09/25/90
4,958,496                   07/460,826                   09/25/90
4,958,506                   07/319,294                   09/25/90
4,958,508                   07/428,982                   09/25/90
4,958,516                   07/478,124                   09/25/90
4,958,520                   07/431,366                   09/25/90
4,958,527                   07/366,815                   09/25/90
4,958,553                   07/341,357                   09/25/90
4,958,554                   07/364,125                   09/25/90
4,958,555                   07/425,699                   09/25/90
4,958,556                   07/352,205                   09/25/90
4,958,557                   07/422,687                   09/25/90
4,958,562                   07/411,095                   09/25/90
4,958,563                   07/410,327                   09/25/90
4,958,567                   07/335,330                   09/25/90
4,958,570                   07/405,207                   09/25/90
4,958,571                   07/406,932                   09/25/90
4,958,572                   07/406,304                   09/25/90
4,958,577                   07/365,683                   09/25/90
4,958,582                   07/055,943                   09/25/90
4,958,592                   07/234,773                   09/25/90
4,958,596                   07/457,149                   09/25/90
4,958,603                   07/474,867                   09/25/90
4,958,609                   07/451,834                   09/25/90
4,958,614                   07/480,012                   09/25/90
4,958,623                   07/419,034                   09/25/90
4,958,626                   07/165,417                   09/25/90
4,958,630                   07/418,286                   09/25/90
4,958,634                   07/047,049                   09/25/90
4,958,637                   07/278,843                   09/25/90
4,958,640                   07/289,386                   09/25/90
4,958,651                   07/349,166                   09/25/90
4,958,652                   07/329,540                   09/25/90
4,958,653                   07/471,584                   09/25/90
4,958,654                   07/375,326                   09/25/90
4,958,656                   07/374,081                   09/25/90
4,958,675                   07/268,492                   09/25/90
4,958,678                   07/288,892                   09/25/90
4,958,680                   07/213,750                   09/25/90
4,958,687                   07/429,424                   09/25/90
4,958,690                   07/272,743                   09/25/90
4,958,692                   07/323,575                   09/25/90
4,958,693                   07/298,567                   09/25/90
4,958,697                   07/405,823                   09/25/90
4,958,715                   07/325,990                   09/25/90
4,958,716                   07/103,733                   09/25/90
4,958,719                   07/237,267                   09/25/90
4,958,728                   07/415,606                   09/25/90
4,958,734                   07/419,319                   09/25/90
4,958,738                   07/426,725                   09/25/90
4,958,747                   07/232,842                   09/25/90
4,958,755                   07/380,562                   09/25/90
4,958,756                   07/286,804                   09/25/90
4,958,763                   07/401,197                   09/25/90
4,958,765                   07/427,516                   09/25/90
4,958,769                   07/289,854                   09/25/90
4,958,770                   07/346,637                   09/25/90
4,958,773                   07/369,505                   09/25/90
4,958,774                   07/369,599                   09/25/90
4,958,776                   07/341,152                   09/25/90
4,958,777                   07/435,214                   09/25/90
4,958,778                   07/378,974                   09/25/90
4,958,780                   07/335,572                   09/25/90
4,958,783                   07/388,959                   09/25/90
4,958,785                   07/271,964                   09/25/90
4,958,786                   07/423,695                   09/25/90
4,958,798                   06/884,022                   09/25/90
4,958,799                   07/451,902                   09/25/90
4,958,801                   07/409,243                   09/25/90
4,958,803                   07/307,004                   09/25/90
4,958,807                   07/386,390                   09/25/90
4,958,810                   07/390,307                   09/25/90
4,958,812                   07/223,063                   09/25/90
4,958,815                   07/300,596                   09/25/90
4,958,818                   07/387,535                   09/25/90
4,958,826                   07/230,157                   09/25/90
4,958,830                   07/276,014                   09/25/90
4,958,832                   07/344,016                   09/25/90
4,958,836                   07/451,149                   09/25/90
4,958,841                   07/371,066                   09/25/90
4,958,842                   07/340,131                   09/25/90
4,958,845                   07/355,493                   09/25/90
4,958,854                   07/346,765                   09/25/90
4,958,858                   07/327,309                   09/25/90
4,958,859                   07/345,782                   09/25/90
4,958,860                   07/361,361                   09/25/90
4,958,863                   07/302,317                   09/25/90
4,958,864                   07/405,483                   09/25/90
4,958,867                   07/473,021                   09/25/90
4,958,868                   07/440,708                   09/25/90
4,958,869                   07/467,553                   09/25/90
4,958,873                   07/251,786                   09/25/90
4,958,874                   07/272,624                   09/25/90
4,958,875                   07/272,062                   09/25/90
4,958,877                   07/387,912                   09/25/90
4,958,882                   07/387,526                   09/25/90
4,958,883                   07/386,592                   09/25/90
4,958,885                   06/880,164                   09/25/90
4,958,886                   07/392,282                   09/25/90
4,958,887                   07/358,965                   09/25/90
4,958,891                   07/348,193                   09/25/90
4,958,901                   07/316,037                   09/25/90
4,958,904                   07/112,317                   09/25/90
4,958,910                   07/282,219                   09/25/90
4,958,911                   07/259,802                   09/25/90
4,958,922                   07/319,904                   09/25/90
4,958,935                   07/250,925                   09/25/90
4,958,943                   07/293,934                   09/25/90
4,958,945                   07/334,674                   09/25/90
4,958,947                   07/387,709                   09/25/90
4,958,952                   07/413,126                   09/25/90
4,958,958                   07/341,747                   09/25/90
4,958,961                   07/419,151                   09/25/90
4,958,963                   07/440,748                   09/25/90
4,958,969                   07/414,758                   09/25/90
4,958,975                   07/246,788                   09/25/90
4,958,978                   07/243,475                   09/25/90
4,958,986                   07/297,861                   09/25/90
4,958,988                   07/063,755                   09/25/90
4,958,990                   07/414,369                   09/25/90
4,958,994                   07/378,181                   09/25/90
4,959,001                   07/326,581                   09/25/90
4,959,004                   07/278,042                   09/25/90
4,959,006                   07/441,065                   09/25/90
4,959,008                   06/605,523                   09/25/90
4,959,009                   07/371,002                   09/25/90
4,959,011                   07/267,529                   09/25/90
4,959,017                   07/311,124                   09/25/90
4,959,029                   07/395,621                   09/25/90
4,959,036                   06/584,919                   09/25/90
4,959,038                   07/373,889                   09/25/90
4,959,040                   07/341,799                   09/25/90
4,959,042                   07/350,992                   09/25/90
4,959,043                   07/400,203                   09/25/90
4,959,044                   07/334,412                   09/25/90
4,959,045                   07/286,314                   09/25/90
4,959,057                   07/327,941                   09/25/90
4,959,074                   07/198,356                   09/25/90
4,959,076                   07/350,510                   09/25/90
4,959,078                   07/416,542                   09/25/90
4,959,089                   07/189,797                   09/25/90
4,959,092                   07/198,287                   09/25/90
4,959,093                   07/288,563                   09/25/90
4,959,094                   07/340,484                   09/25/90
4,959,096                   07/324,876                   09/25/90
4,959,098                   07/360,864                   09/25/90
4,959,114                   07/368,720                   09/25/90
4,959,117                   07/264,881                   09/25/90
4,959,118                   07/305,091                   09/25/90
4,959,119                   07/443,301                   09/25/90
4,959,121                   07/461,579                   09/25/90
4,959,123                   07/151,387                   09/25/90
4,959,127                   07/064,400                   09/25/90
4,959,128                   07/484,413                   09/25/90
4,959,130                   07/353,076                   09/25/90
4,959,133                   07/299,868                   09/25/90
4,959,140                   07/328,577                   09/25/90
4,959,144                   07/303,854                   09/25/90
4,959,146                   07/146,506                   09/25/90
4,959,159                   07/386,154                   09/25/90
4,959,167                   07/305,834                   09/25/90
4,959,181                   07/326,487                   09/25/90
4,959,183                   07/443,068                   09/25/90
4,959,190                   07/285,901                   09/25/90
4,959,193                   07/350,187                   09/25/90
4,959,194                   07/329,901                   09/25/90
4,959,196                   07/286,798                   09/25/90
4,959,204                   07/010,253                   09/25/90
4,959,211                   07/184,784                   09/25/90
4,959,223                   07/340,905                   09/25/90
4,959,227                   07/015,303                   09/25/90
4,959,228                   07/436,096                   09/25/90
4,959,229                   07/496,245                   09/25/90
4,959,235                   07/240,198                   09/25/90
4,959,239                   07/266,046                   09/25/90
4,959,242                   07/238,114                   09/25/90
4,959,243                   07/300,849                   09/25/90
4,959,246                   06/617,853                   09/25/90
4,959,259                   07/259,147                   09/25/90
4,959,271                   07/215,851                   09/25/90
4,959,275                   07/339,123                   09/25/90
4,959,277                   07/444,664                   09/25/90
4,959,286                   07/332,087                   09/25/90
4,959,287                   07/413,402                   09/25/90
4,959,300                   07/180,478                   09/25/90
4,959,302                   07/087,630                   09/25/90
4,959,305                   07/265,303                   09/25/90
4,959,308                   07/089,884                   09/25/90
4,959,309                   07/107,183                   09/25/90
4,959,310                   07/101,918                   09/25/90
4,959,315                   07/044,213                   09/25/90
4,959,337                   07/283,709                   09/25/90
4,959,342                   07/288,232                   09/25/90
4,959,344                   07/373,943                   09/25/90
4,959,345                   07/187,044                   09/25/90
4,959,347                   07/235,497                   09/25/90
4,959,357                   06/769,154                   09/25/90
4,959,358                   07/197,729                   09/25/90
4,959,367                   07/266,122                   09/25/90
4,959,369                   07/150,896                   09/25/90
4,959,372                   07/237,497                   09/25/90
4,959,373                   07/247,645                   09/25/90
4,959,385                   07/299,039                   09/25/90
4,959,390                   07/285,005                   09/25/90
4,959,395                   07/483,300                   09/25/90
4,959,400                   07/398,337                   09/25/90
4,959,410                   07/318,972                   09/25/90
4,959,412                   07/316,237                   09/25/90
4,959,416                   07/352,622                   09/25/90
4,959,418                   06/897,348                   09/25/90
4,959,425                   07/372,581                   09/25/90
4,959,426                   07/267,733                   09/25/90
4,959,433                   07/024,878                   09/25/90
4,959,434                   07/455,762                   09/25/90
4,959,441                   07/348,395                   09/25/90
4,959,442                   07/421,305                   09/25/90
4,959,443                   07/351,471                   09/25/90
4,959,444                   07/241,168                   09/25/90
4,959,445                   07/068,163                   09/25/90
4,959,446                   07/357,459                   09/25/90
4,959,447                   07/240,491                   09/25/90
4,959,449                   07/356,692                   09/25/90
4,959,460                   07/400,470                   09/25/90
4,959,465                   07/160,851                   09/25/90
4,959,469                   07/315,917                   09/25/90
4,959,473                   07/183,571                   09/25/90
4,959,475                   07/458,292                   09/25/90
4,959,477                   07/312,364                   09/25/90
4,959,480                   07/166,084                   09/25/90
4,959,482                   07/248,942                   09/25/90
4,959,484                   07/338,174                   09/25/90
4,959,485                   07/351,625                   09/25/90
4,959,486                   07/402,091                   09/25/90
4,959,489                   07/416,289                   09/25/90
4,959,492                   07/380,567                   09/25/90
4,959,496                   07/235,854                   09/25/90
4,959,498                   07/326,607                   09/25/90
4,959,499                   07/000,227                   09/25/90
4,959,503                   07/266,035                   09/25/90
4,959,504                   07/274,864                   09/25/90
4,959,506                   07/198,817                   09/25/90
4,959,510                   07/354,221                   09/25/90
4,959,518                   07/359,020                   09/25/90
4,959,522                   07/464,266                   09/25/90
4,959,531                   07/414,558                   09/25/90
4,959,533                   07/259,522                   09/25/90
4,959,535                   07/418,976                   09/25/90
4,959,537                   07/365,934                   09/25/90
4,959,540                   07/351,686                   09/25/90
4,959,544                   07/416,455                   09/25/90
4,959,546                   06/282,615                   09/25/90
4,959,548                   07/346,762                   09/25/90
4,959,554                   07/348,908                   09/25/90
4,959,567                   07/286,837                   09/25/90
4,959,575                   07/377,762                   09/25/90
4,959,581                   07/270,548                   09/25/90
4,959,584                   07/370,664                   09/25/90
4,959,598                   07/411,185                   09/25/90
4,959,612                   07/358,326                   09/25/90
4,959,614                   07/389,233                   09/25/90
4,959,619                   07/439,618                   09/25/90
4,959,621                   07/367,319                   09/25/90
4,959,628                   07/385,673                   09/25/90
4,959,635                   07/352,757                   09/25/90
4,959,637                   07/390,088                   09/25/90
4,959,640                   07/320,946                   09/25/90
4,959,645                   07/289,560                   09/25/90
4,959,649                   07/237,107                   09/25/90
4,959,653                   07/397,658                   09/25/90
4,959,654                   07/241,688                   09/25/90
4,959,656                   07/429,734                   09/25/90
4,959,658                   07/084,664                   09/25/90
4,959,661                   07/413,898                   09/25/90
4,959,663                   07/317,284                   09/25/90
4,959,670                   07/448,265                   09/25/90
4,959,693                   07/266,842                   09/25/90
4,959,708                   07/286,110                   09/25/90
4,959,712                   07/429,285                   09/25/90
4,959,715                   07/367,521                   09/25/90
4,959,733                   07/194,303                   09/25/90
4,959,734                   07/294,767                   09/25/90
4,959,741                   07/155,947                   09/25/90
4,959,746                   07/237,547                   09/25/90
4,959,749                   07/395,236                   09/25/90
4,959,755                   07/310,307                   09/25/90
4,959,766                   07/376,854                   09/25/90
4,959,767                   07/275,813                   09/25/90
4,959,773                   07/143,283                   09/25/90
4,959,774                   07/374,614                   09/25/90
4,959,775                   07/145,751                   09/25/90
4,959,781                   07/194,457                   09/25/90
4,959,783                   07/334,168                   09/25/90
4,959,791                   07/157,961                   09/25/90
4,959,806                   07/261,448                   09/25/90
4,959,809                   07/322,095                   09/25/90
4,959,815                   07/184,242                   09/25/90
4,959,818                   07/382,871                   09/25/90
4,959,823                   07/410,357                   09/25/90
4,959,827                   07/331,253                   09/25/90
4,959,831                   07/386,840                   09/25/90
4,959,832                   07/281,617                   09/25/90
4,959,835                   07/293,444                   09/25/90
4,959,853                   07/305,853                   09/25/90
4,959,861                   07/218,385                   09/25/90
4,959,864                   07/409,996                   09/25/90
4,959,871                   07/244,595                   09/25/90

                  PATENTS WHICH EXPIRED ON September 27, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

5,349,706                   08/172,911                   09/27/94
5,349,708                   08/138,231                   09/27/94
5,349,710                   07/961,414                   09/27/94
5,349,711                   07/919,413                   09/27/94
5,349,713                   07/981,713                   09/27/94
5,349,724                   07/978,636                   09/27/94
5,349,726                   08/122,046                   09/27/94
5,349,727                   08/051,246                   09/27/94
5,349,730                   08/028,791                   09/27/94
5,349,733                   08/104,648                   09/27/94
5,349,738                   08/128,786                   09/27/94
5,349,746                   07/956,892                   09/27/94
5,349,747                   07/996,571                   09/27/94
5,349,752                   08/023,260                   09/27/94
5,349,754                   07/987,441                   09/27/94
5,349,756                   08/116,521                   09/27/94
5,349,757                   08/076,800                   09/27/94
5,349,770                   08/021,306                   09/27/94
5,349,774                   07/828,052                   09/27/94
5,349,776                   08/085,506                   09/27/94
5,349,777                   08/198,770                   09/27/94
5,349,779                   08/027,681                   09/27/94
5,349,780                   07/916,472                   09/27/94
5,349,786                   08/126,774                   09/27/94
5,349,788                   08/136,544                   09/27/94
5,349,790                   07/960,873                   09/27/94
5,349,794                   07/859,588                   09/27/94
5,349,795                   08/025,860                   09/27/94
5,349,800                   08/049,765                   09/27/94
5,349,801                   08/111,662                   09/27/94
5,349,807                   07/870,550                   09/27/94
5,349,819                   08/122,060                   09/27/94
5,349,843                   08/083,622                   09/27/94
5,349,845                   08/041,063                   09/27/94
5,349,847                   08/159,082                   09/27/94
5,349,849                   08/030,313                   09/27/94
5,349,851                   08/181,938                   09/27/94
5,349,860                   07/882,455                   09/27/94
5,349,862                   07/795,041                   09/27/94
5,349,866                   07/882,540                   09/27/94
5,349,869                   08/043,052                   09/27/94
5,349,886                   08/094,903                   09/27/94
5,349,889                   07/857,971                   09/27/94
5,349,906                   08/070,453                   09/27/94
5,349,907                   08/130,574                   09/27/94
5,349,908                   08/011,996                   09/27/94
5,349,914                   08/084,162                   09/27/94
5,349,916                   08/120,880                   09/27/94
5,349,918                   08/071,054                   09/27/94
5,349,922                   08/099,508                   09/27/94
5,349,925                   08/131,442                   09/27/94
5,349,929                   08/087,294                   09/27/94
5,349,938                   08/052,084                   09/27/94
5,349,943                   08/110,887                   09/27/94
5,349,949                   07/955,157                   09/27/94
5,349,957                   07/984,611                   09/27/94
5,349,966                   07/989,144                   09/27/94
5,349,967                   08/033,837                   09/27/94
5,349,970                   07/962,705                   09/27/94
5,349,975                   08/144,404                   09/27/94
5,349,986                   08/112,814                   09/27/94
5,349,987                   08/185,008                   09/27/94
5,349,990                   08/078,480                   09/27/94
5,349,992                   07/934,177                   09/27/94
5,349,993                   07/959,963                   09/27/94
5,349,995                   08/106,661                   09/27/94
5,349,997                   08/149,381                   09/27/94
5,349,998                   07/975,458                   09/27/94
5,350,000                   08/190,369                   09/27/94
5,350,023                   08/078,275                   09/27/94
5,350,024                   07/988,969                   09/27/94
5,350,025                   08/135,222                   09/27/94
5,350,027                   07/930,509                   09/27/94
5,350,029                   08/056,924                   09/27/94
5,350,030                   08/104,533                   09/27/94
5,350,032                   08/044,818                   09/27/94
5,350,035                   07/881,270                   09/27/94
5,350,046                   07/979,149                   09/27/94
5,350,057                   08/070,723                   09/27/94
5,350,061                   08/183,871                   09/27/94
5,350,065                   08/076,436                   09/27/94
5,350,067                   08/139,291                   09/27/94
5,350,068                   08/119,725                   09/27/94
5,350,069                   08/114,683                   09/27/94
5,350,070                   08/100,683                   09/27/94
5,350,071                   08/020,105                   09/27/94
5,350,073                   07/991,342                   09/27/94
5,350,077                   08/075,091                   09/27/94
5,350,085                   08/028,232                   09/27/94
5,350,090                   08/060,314                   09/27/94
5,350,091                   08/060,004                   09/27/94
5,350,095                   08/151,004                   09/27/94
5,350,096                   07/893,283                   09/27/94
5,350,110                   08/039,117                   09/27/94
5,350,120                   08/105,334                   09/27/94
5,350,124                   08/021,886                   09/27/94
5,350,127                   08/058,470                   09/27/94
5,350,128                   07/945,111                   09/27/94
5,350,137                   08/064,389                   09/27/94
5,350,144                   08/106,221                   09/27/94
5,350,149                   08/017,621                   09/27/94
5,350,150                   07/956,156                   09/27/94
5,350,152                   08/172,981                   09/27/94
5,350,158                   08/039,287                   09/27/94
5,350,159                   08/019,251                   09/27/94
5,350,162                   08/027,650                   09/27/94
5,350,171                   07/771,453                   09/27/94
5,350,175                   08/178,502                   09/27/94
5,350,178                   08/053,181                   09/27/94
5,350,179                   08/105,332                   09/27/94
5,350,180                   08/098,597                   09/27/94
5,350,184                   07/992,806                   09/27/94
5,350,188                   07/846,861                   09/27/94
5,350,189                   07/918,021                   09/27/94
5,350,190                   08/087,651                   09/27/94
5,350,193                   08/127,758                   09/27/94
5,350,197                   08/192,721                   09/27/94
5,350,199                   08/122,696                   09/27/94
5,350,200                   08/179,174                   09/27/94
5,350,201                   08/005,012                   09/27/94
5,350,209                   07/962,139                   09/27/94
5,350,212                   07/917,970                   09/27/94
5,350,218                   08/132,452                   09/27/94
5,350,220                   08/155,664                   09/27/94
5,350,221                   08/032,386                   09/27/94
5,350,230                   08/128,204                   09/27/94
5,350,232                   08/064,130                   09/27/94
5,350,238                   08/018,400                   09/27/94
5,350,244                   07/726,039                   09/27/94
5,350,247                   08/083,633                   09/27/94
5,350,248                   08/170,820                   09/27/94
5,350,272                   07/962,902                   09/27/94
5,350,273                   08/110,220                   09/27/94
5,350,274                   08/086,000                   09/27/94
5,350,282                   08/059,258                   09/27/94
5,350,285                   08/097,069                   09/27/94
5,350,294                   08/088,552                   09/27/94
5,350,298                   07/989,111                   09/27/94
5,350,300                   07/675,915                   09/27/94
5,350,308                   08/107,431                   09/27/94
5,350,315                   08/117,866                   09/27/94
5,350,317                   08/088,202                   09/27/94
5,350,328                   08/034,374                   09/27/94
5,350,330                   08/078,743                   09/27/94
5,350,332                   08/070,263                   09/27/94
5,350,333                   08/109,704                   09/27/94
5,350,338                   08/031,632                   09/27/94
5,350,340                   07/671,768                   09/27/94
5,350,341                   08/098,040                   09/27/94
5,350,351                   08/010,009                   09/27/94
5,350,376                   08/047,190                   09/27/94
5,350,381                   08/029,770                   09/27/94
5,350,382                   08/000,760                   09/27/94
5,350,384                   07/993,521                   09/27/94
5,350,423                   08/120,360                   09/27/94
5,350,425                   08/104,492                   09/27/94
5,350,430                   08/190,984                   09/27/94
5,350,435                   08/026,560                   09/27/94
5,350,437                   08/032,308                   09/27/94
5,350,451                   07/925,730                   09/27/94
5,350,454                   08/023,096                   09/27/94
5,350,464                   07/978,202                   09/27/94
5,350,465                   07/954,919                   09/27/94
5,350,481                   08/105,982                   09/27/94
5,350,485                   08/009,012                   09/27/94
5,350,504                   07/992,668                   09/27/94
5,350,508                   08/102,982                   09/27/94
5,350,513                   07/907,966                   09/27/94
5,350,517                   08/039,290                   09/27/94
5,350,521                   08/111,280                   09/27/94
5,350,532                   08/132,028                   09/27/94
5,350,534                   08/087,098                   09/27/94
5,350,545                   08/027,075                   09/27/94
5,350,547                   07/952,639                   09/27/94
5,350,551                   07/773,404                   09/27/94
5,350,553                   07/799,554                   09/27/94
5,350,564                   08/083,733                   09/27/94
5,350,578                   07/782,817                   09/27/94
5,350,584                   07/906,226                   09/27/94
5,350,586                   08/026,342                   09/27/94
5,350,591                   07/944,296                   09/27/94
5,350,593                   08/157,489                   09/27/94
5,350,602                   07/937,154                   09/27/94
5,350,613                   08/036,030                   09/27/94
5,350,614                   08/070,032                   09/27/94
5,350,623                   07/945,480                   09/27/94
5,350,630                   07/926,907                   09/27/94
5,350,632                   08/017,632                   09/27/94
5,350,633                   08/103,673                   09/27/94
5,350,634                   08/103,674                   09/27/94
5,350,636                   07/979,314                   09/27/94
5,350,674                   07/941,352                   09/27/94
5,350,678                   07/884,252                   09/27/94
5,350,687                   07/617,485                   09/27/94
5,350,688                   07/899,218                   09/27/94
5,350,697                   07/574,184                   09/27/94
5,350,701                   07/988,912                   09/27/94
5,350,724                   08/058,167                   09/27/94
5,350,726                   08/116,422                   09/27/94
5,350,736                   07/933,110                   09/27/94
5,350,744                   07/937,078                   09/27/94
5,350,746                   08/048,534                   09/27/94
5,350,747                   07/836,019                   09/27/94
5,350,755                   07/917,925                   09/27/94
5,350,761                   08/099,873                   09/27/94
5,350,764                   08/030,055                   09/27/94
5,350,765                   08/113,942                   09/27/94
5,350,767                   07/936,615                   09/27/94
5,350,768                   08/024,843                   09/27/94
5,350,774                   07/905,311                   09/27/94
5,350,776                   08/127,228                   09/27/94
5,350,781                   08/123,951                   09/27/94
5,350,783                   08/082,361                   09/27/94
5,350,786                   08/026,097                   09/27/94
5,350,808                   07/994,251                   09/27/94
5,350,811                   08/077,657                   09/27/94
5,350,816                   08/099,042                   09/27/94
5,350,819                   08/044,529                   09/27/94
5,350,826                   07/982,722                   09/27/94
5,350,827                   08/194,292                   09/27/94
5,350,828                   08/047,332                   09/27/94
5,350,832                   07/990,201                   09/27/94
5,350,838                   08/014,905                   09/27/94
5,350,839                   08/039,121                   09/27/94
5,350,846                   08/007,934                   09/27/94
5,350,850                   07/957,176                   09/27/94
5,350,853                   08/054,235                   09/27/94
5,350,864                   07/518,719                   09/27/94
5,350,867                   08/074,257                   09/27/94
5,350,872                   08/143,124                   09/27/94
5,350,875                   08/156,755                   09/27/94
5,350,878                   08/015,737                   09/27/94
5,350,887                   07/940,865                   09/27/94
5,350,890                   07/954,531                   09/27/94
5,350,900                   07/914,774                   09/27/94
5,350,901                   08/004,118                   09/27/94
5,350,909                   07/960,656                   09/27/94
5,350,940                   07/804,334                   09/27/94
5,350,945                   07/992,866                   09/27/94
5,350,953                   08/069,943                   09/27/94
5,350,966                   08/124,677                   09/27/94
5,350,997                   07/990,997                   09/27/94
5,351,001                   07/504,803                   09/27/94
5,351,003                   08/042,228                   09/27/94
5,351,018                   07/982,286                   09/27/94
5,351,022                   07/862,566                   09/27/94
5,351,032                   08/019,696                   09/27/94
5,351,036                   07/805,297                   09/27/94
5,351,038                   07/997,347                   09/27/94
5,351,046                   08/068,899                   09/27/94
5,351,049                   07/936,196                   09/27/94
5,351,060                   07/840,498                   09/27/94
5,351,061                   08/090,362                   09/27/94
5,351,062                   07/941,814                   09/27/94
5,351,072                   07/726,178                   09/27/94
5,351,076                   07/925,924                   09/27/94
5,351,082                   08/058,036                   09/27/94
5,351,098                   07/882,314                   09/27/94
5,351,100                   07/987,737                   09/27/94
5,351,108                   08/005,332                   09/27/94
5,351,116                   07/961,905                   09/27/94
5,351,117                   08/031,585                   09/27/94
5,351,118                   07/688,545                   09/27/94
5,351,121                   08/009,454                   09/27/94
5,351,132                   07/942,745                   09/27/94
5,351,157                   07/941,477                   09/27/94
5,351,164                   07/968,185                   09/27/94
5,351,171                   07/994,263                   09/27/94
5,351,176                   07/999,216                   09/27/94
5,351,186                   07/642,257                   09/27/94
5,351,192                   07/997,486                   09/27/94
5,351,205                   08/116,926                   09/27/94
5,351,241                   07/996,699                   09/27/94
5,351,250                   07/768,960                   09/27/94
5,351,260                   08/209,345                   09/27/94
5,351,311                   07/920,700                   09/27/94
5,351,337                   07/950,948                   09/27/94