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

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

                    PATENTS WHICH EXPIRED ON March 7, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Serial                        Issue
Number                           Number                         Date

4,809,364                      07/096,335                   03/07/89
4,809,375                      06/855,138                   03/07/89
4,809,384                      07/018,022                   03/07/89
4,809,402                      06/794,022                   03/07/89
4,809,405                      07/096,709                   03/07/89
4,809,406                      07/116,328                   03/07/89
4,809,411                      06/339,780                   03/07/89
4,809,424                      06/376,070                   03/07/89
4,809,425                      07/198,288                   03/07/89
4,809,426                      06/924,342                   03/07/89
4,809,427                      07/032,441                   03/07/89
4,809,432                      06/933,973                   03/07/89
4,809,437                      07/091,120                   03/07/89
4,809,438                      07/110,467                   03/07/89
4,809,443                      06/943,749                   03/07/89
4,809,446                      07/157,511                   03/07/89
4,809,466                      06/883,889                   03/07/89
4,809,473                      07/034,107                   03/07/89
4,809,476                      07/193,127                   03/07/89
4,809,485                      07/136,272                   03/07/89
4,809,486                      07/180,535                   03/07/89
4,809,495                      07/127,461                   03/07/89
4,809,499                      07/051,887                   03/07/89
4,809,508                      07/029,306                   03/07/89
4,809,516                      07/025,737                   03/07/89
4,809,523                      06/611,197                   03/07/89
4,809,524                      06/868,606                   03/07/89
4,809,533                      06/570,998                   03/07/89
4,809,534                      07/139,803                   03/07/89
4,809,538                      07/082,537                   03/07/89
4,809,540                      07/124,587                   03/07/89
4,809,550                      06/946,526                   03/07/89
4,809,553                      07/074,357                   03/07/89
4,809,560                      07/233,124                   03/07/89
4,809,561                      06/828,525                   03/07/89
4,809,575                      06/936,271                   03/07/89
4,809,576                      07/089,191                   03/07/89
4,809,586                      07/096,574                   03/07/89
4,809,587                      07/156,836                   03/07/89
4,809,591                      07/169,837                   03/07/89
4,809,593                      06/940,664                   03/07/89
4,809,604                      07/146,736                   03/07/89
4,809,609                      06/776,530                   03/07/89
4,809,611                      07/045,964                   03/07/89
4,809,621                      07/181,382                   03/07/89
4,809,624                      07/165,053                   03/07/89
4,809,627                      07/216,787                   03/07/89
4,809,645                      07/160,804                   03/07/89
4,809,650                      07/104,910                   03/07/89
4,809,652                      06/903,317                   03/07/89
4,809,668                      07/031,033                   03/07/89
4,809,671                      07/106,387                   03/07/89
4,809,672                      07/107,558                   03/07/89
4,809,695                      07/018,662                   03/07/89
4,809,709                      07/061,946                   03/07/89
4,809,717                      07/070,892                   03/07/89
4,809,719                      07/088,596                   03/07/89
4,809,734                      07/250,083                   03/07/89
4,809,743                      07/066,505                   03/07/89
4,809,758                      07/057,500                   03/07/89
4,809,762                      07/079,096                   03/07/89
4,809,765                      07/201,370                   03/07/89
4,809,768                      07/089,527                   03/07/89
4,809,770                      07/151,178                   03/07/89
4,809,780                      07/149,801                   03/07/89
4,809,782                      07/002,610                   03/07/89
4,809,790                      07/093,305                   03/07/89
4,809,791                      07/153,317                   03/07/89
4,809,796                      07/108,927                   03/07/89
4,809,801                      07/067,971                   03/07/89
4,809,807                      07/206,974                   03/07/89
4,809,817                      07/029,988                   03/07/89
4,809,826                      07/142,389                   03/07/89
4,809,838                      07/062,188                   03/07/89
4,809,841                      06/855,394                   03/07/89
4,809,859                      07/009,670                   03/07/89
4,809,860                      07/129,237                   03/07/89
4,809,864                      07/157,919                   03/07/89
4,809,867                      07/135,376                   03/07/89
4,809,872                      07/190,322                   03/07/89
4,809,874                      07/160,718                   03/07/89
4,809,877                      07/085,884                   03/07/89
4,809,878                      07/212,129                   03/07/89
4,809,886                      07/078,953                   03/07/89
4,809,890                      07/121,084                   03/07/89
4,809,900                      07/000,119                   03/07/89
4,809,905                      07/005,702                   03/07/89
4,809,911                      07/087,211                   03/07/89
4,809,914                      07/122,513                   03/07/89
4,809,918                      07/115,291                   03/07/89
4,809,919                      07/104,360                   03/07/89
4,809,930                      07/177,868                   03/07/89
4,809,932                      07/134,364                   03/07/89
4,809,943                      07/105,622                   03/07/89
4,809,952                      06/878,648                   03/07/89
4,809,954                      07/013,650                   03/07/89
4,809,959                      06/945,886                   03/07/89
4,809,960                      07/173,146                   03/07/89
4,809,969                      06/919,896                   03/07/89
4,809,982                      07/008,685                   03/07/89
4,809,987                      07/072,397                   03/07/89
4,810,002                      07/072,047                   03/07/89
4,810,003                      07/009,954                   03/07/89
4,810,006                      07/053,808                   03/07/89
4,810,016                      06/661,571                   03/07/89
4,810,019                      07/147,308                   03/07/89
4,810,020                      07/164,516                   03/07/89
4,810,021                      07/127,589                   03/07/89
4,810,022                      06/719,076                   03/07/89
4,810,024                      07/096,366                   03/07/89
4,810,025                      07/007,000                   03/07/89
4,810,026                      07/125,947                   03/07/89
4,810,035                      07/090,602                   03/07/89
4,810,042                      07/199,934                   03/07/89
4,810,047                      07/156,333                   03/07/89
4,810,048                      06/788,258                   03/07/89
4,810,052                      06/816,808                   03/07/89
4,810,054                      06/903,280                   03/07/89
4,810,059                      07/055,494                   03/07/89
4,810,061                      07/173,301                   03/07/89
4,810,068                      07/033,582                   03/07/89
4,810,073                      07/015,455                   03/07/89
4,810,078                      07/109,437                   03/07/89
4,810,080                      07/092,488                   03/07/89
4,810,084                      06/893,713                   03/07/89
4,810,088                      06/801,162                   03/07/89
4,810,099                      07/057,300                   03/07/89
4,810,124                      07/123,766                   03/07/89
4,810,125                      07/139,882                   03/07/89
4,810,134                      07/037,621                   03/07/89
4,810,138                      07/092,622                   03/07/89
4,810,141                      07/063,626                   03/07/89
4,810,147                      07/096,045                   03/07/89
4,810,154                      07/159,617                   03/07/89
4,810,156                      07/096,073                   03/07/89
4,810,157                      07/163,820                   03/07/89
4,810,164                      07/119,475                   03/07/89
4,810,169                      07/060,011                   03/07/89
4,810,170                      07/152,341                   03/07/89
4,810,179                      07/148,873                   03/07/89
4,810,186                      06/903,987                   03/07/89
4,810,187                      07/132,242                   03/07/89
4,810,191                      07/087,404                   03/07/89
4,810,197                      07/172,662                   03/07/89
4,810,209                      07/055,203                   03/07/89
4,810,221                      07/153,862                   03/07/89
4,810,237                      07/055,621                   03/07/89
4,810,239                      07/117,620                   03/07/89
4,810,240                      07/116,524                   03/07/89
4,810,241                      07/027,659                   03/07/89
4,810,251                      06/858,160                   03/07/89
4,810,261                      07/158,424                   03/07/89
4,810,267                      06/871,988                   03/07/89
4,810,270                      06/790,700                   03/07/89
4,810,275                      07/074,340                   03/07/89
4,810,293                      07/052,110                   03/07/89
4,810,297                      07/126,350                   03/07/89
4,810,298                      07/127,596                   03/07/89
4,810,306                      06/833,946                   03/07/89
4,810,318                      07/011,416                   03/07/89
4,810,322                      06/926,299                   03/07/89
4,810,332                      07/222,486                   03/07/89
4,810,341                      07/027,660                   03/07/89
4,810,346                      07/111,207                   03/07/89
4,810,349                      06/910,920                   03/07/89
4,810,354                      06/926,308                   03/07/89
4,810,359                      06/897,233                   03/07/89
4,810,363                      07/141,180                   03/07/89
4,810,368                      07/055,125                   03/07/89
4,810,371                      07/140,060                   03/07/89
4,810,378                      07/053,884                   03/07/89
4,810,396                      07/188,517                   03/07/89
4,810,400                      07/021,470                   03/07/89
4,810,402                      07/186,144                   03/07/89
4,810,404                      07/160,996                   03/07/89
4,810,416                      06/542,714                   03/07/89
4,810,417                      06/456,761                   03/07/89
4,810,426                      06/823,178                   03/07/89
4,810,431                      07/053,471                   03/07/89
4,810,434                      06/919,991                   03/07/89
4,810,440                      07/066,363                   03/07/89
4,810,443                      07/069,098                   03/07/89
4,810,466                      07/111,641                   03/07/89
4,810,523                      06/941,350                   03/07/89
4,810,526                      07/010,846                   03/07/89
4,810,530                      06/899,835                   03/07/89
4,810,534                      07/099,022                   03/07/89
4,810,536                      07/083,760                   03/07/89
4,810,537                      07/120,187                   03/07/89
4,810,543                      06/920,232                   03/07/89
4,810,551                      06/939,477                   03/07/89
4,810,566                      07/175,357                   03/07/89
4,810,568                      07/062,356                   03/07/89
4,810,574                      07/055,198                   03/07/89
4,810,575                      07/017,337                   03/07/89
4,810,579                      07/154,888                   03/07/89
4,810,580                      07/114,538                   03/07/89
4,810,582                      07/169,936                   03/07/89
4,810,592                      07/046,265                   03/07/89
4,810,597                      06/709,204                   03/07/89
4,810,616                      07/083,611                   03/07/89
4,810,625                      07/038,658                   03/07/89
4,810,631                      06/861,818                   03/07/89
4,810,639                      06/852,708                   03/07/89
4,810,641                      06/840,763                   03/07/89
4,810,654                      06/921,333                   03/07/89
4,810,662                      07/097,042                   03/07/89
4,810,674                      07/149,471                   03/07/89
4,810,676                      07/207,890                   03/07/89
4,810,677                      07/119,478                   03/07/89
4,810,681                      07/063,771                   03/07/89
4,810,682                      07/060,172                   03/07/89
4,810,684                      07/100,662                   03/07/89
4,810,686                      07/100,663                   03/07/89
4,810,687                      07/100,661                   03/07/89
4,810,696                      07/066,452                   03/07/89
4,810,699                      07/099,025                   03/07/89
4,810,702                      07/131,779                   03/07/89
4,810,708                      07/017,027                   03/07/89
4,810,718                      07/074,352                   03/07/89
4,810,721                      07/121,887                   03/07/89
4,810,727                      07/083,238                   03/07/89
4,810,732                      07/099,805                   03/07/89
4,810,735                      07/091,001                   03/07/89
4,810,740                      07/073,786                   03/07/89
4,810,742                      07/151,214                   03/07/89
4,810,743                      07/151,213                   03/07/89
4,810,744                      07/177,201                   03/07/89
4,810,759                      06/942,226                   03/07/89
4,810,797                      07/032,437                   03/07/89
4,810,807                      07/214,788                   03/07/89
4,810,818                      07/078,707                   03/07/89
4,810,820                      07/084,546                   03/07/89
4,810,823                      07/136,094                   03/07/89
4,810,825                      07/129,662                   03/07/89
4,810,826                      07/169,554                   03/07/89
4,810,827                      06/942,423                   03/07/89
4,810,828                      07/080,407                   03/07/89
4,810,834                      07/122,774                   03/07/89
4,810,836                      07/199,717                   03/07/89
4,810,837                      07/151,649                   03/07/89
4,810,838                      07/070,912                   03/07/89
4,810,839                      07/125,383                   03/07/89
4,810,844                      07/126,366                   03/07/89
4,810,854                      07/054,455                   03/07/89
4,810,912                      07/120,452                   03/07/89
4,810,929                      07/219,826                   03/07/89
4,810,940                      07/181,066                   03/07/89
4,810,949                      07/174,290                   03/07/89
4,810,959                      07/155,794                   03/07/89
4,810,966                      06/622,120                   03/07/89
4,810,972                      07/104,720                   03/07/89
4,810,979                      07/103,727                   03/07/89
4,810,989                      07/087,100                   03/07/89
4,810,990                      07/161,473                   03/07/89
4,810,995                      07/021,666                   03/07/89
4,811,002                      07/104,442                   03/07/89
4,811,003                      07/113,040                   03/07/89
4,811,006                      06/913,175                   03/07/89
4,811,015                      06/838,551                   03/07/89
4,811,016                      06/921,593                   03/07/89
4,811,020                      07/042,827                   03/07/89
4,811,027                      06/826,276                   03/07/89
4,811,030                      06/751,203                   03/07/89
4,811,044                      07/207,930                   03/07/89
4,811,046                      07/078,743                   03/07/89
4,811,056                      07/100,989                   03/07/89
4,811,064                      07/009,017                   03/07/89
4,811,066                      07/109,658                   03/07/89
4,811,100                      06/908,654                   03/07/89
4,811,102                      07/030,936                   03/07/89
4,811,103                      07/032,124                   03/07/89
4,811,104                      07/038,245                   03/07/89
4,811,137                      07/050,531                   03/07/89
4,811,142                      07/000,885                   03/07/89
4,811,143                      07/032,016                   03/07/89
4,811,146                      07/049,211                   03/07/89
4,811,147                      07/106,021                   03/07/89
4,811,149                      07/088,051                   03/07/89
4,811,153                      06/878,358                   03/07/89
4,811,156                      07/160,717                   03/07/89
4,811,157                      07/144,513                   03/07/89
4,811,178                      07/179,580                   03/07/89
4,811,185                      07/108,462                   03/07/89
4,811,186                      07/160,381                   03/07/89
4,811,198                      07/048,353                   03/07/89
4,811,211                      06/913,055                   03/07/89
4,811,214                      06/931,549                   03/07/89
4,811,219                      07/117,907                   03/07/89
4,811,224                      06/848,827                   03/07/89
4,811,225                      07/025,389                   03/07/89
4,811,226                      07/139,121                   03/07/89
4,811,241                      06/821,103                   03/07/89
4,811,252                      06/913,292                   03/07/89
4,811,253                      06/841,511                   03/07/89
4,811,254                      06/940,545                   03/07/89
4,811,259                      06/826,804                   03/07/89
4,811,267                      07/162,306                   03/07/89
4,811,271                      07/065,545                   03/07/89
4,811,276                      06/946,947                   03/07/89
4,811,284                      07/042,553                   03/07/89
4,811,288                      06/877,907                   03/07/89
4,811,289                      07/012,819                   03/07/89
4,811,294                      06/876,914                   03/07/89
4,811,298                      07/087,489                   03/07/89
4,811,300                      07/026,239                   03/07/89
4,811,302                      07/065,756                   03/07/89
4,811,303                      06/933,156                   03/07/89
4,811,305                      07/024,212                   03/07/89
4,811,317                      07/066,805                   03/07/89
4,811,322                      07/216,667                   03/07/89
4,811,334                      07/063,367                   03/07/89
4,811,336                      07/002,338                   03/07/89
4,811,337                      07/145,443                   03/07/89
4,811,339                      07/033,276                   03/07/89
4,811,342                      06/797,280                   03/07/89
4,811,343                      07/020,637                   03/07/89
4,811,360                      07/144,534                   03/07/89
4,811,365                      06/928,203                   03/07/89
4,811,368                      07/092,880                   03/07/89
4,811,386                      07/081,306                   03/07/89
4,811,388                      07/087,183                   03/07/89
4,811,391                      07/055,484                   03/07/89
4,811,395                      07/105,644                   03/07/89
4,811,401                      07/207,926                   03/07/89
4,811,402                      06/932,812                   03/07/89
4,811,414                      07/020,331                   03/07/89
4,811,416                      06/911,438                   03/07/89
4,811,419                      07/185,981                   03/07/89

                    PATENTS WHICH EXPIRED ON March 2, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Serial                        Issue
Number                           Number                         Date

5,189,735                      07/671,503                   03/02/93
5,189,738                      07/740,804                   03/02/93
5,189,739                      07/763,285                   03/02/93
5,189,750                      07/727,029                   03/02/93
5,189,754                      07/621,993                   03/02/93
5,189,755                      07/866,893                   03/02/93
5,189,756                      07/628,630                   03/02/93
5,189,765                      07/730,478                   03/02/93
5,189,767                      07/794,419                   03/02/93
5,189,773                      07/730,238                   03/02/93
5,189,774                      07/909,587                   03/02/93
5,189,780                      07/911,147                   03/02/93
5,189,794                      07/807,994                   03/02/93
5,189,803                      07/733,700                   03/02/93
5,189,813                      07/658,650                   03/02/93
5,189,816                      07/782,038                   03/02/93
5,189,822                      07/571,982                   03/02/93
5,189,823                      07/692,117                   03/02/93
5,189,825                      07/768,924                   03/02/93
5,189,828                      07/816,605                   03/02/93
5,189,831                      07/572,486                   03/02/93
5,189,832                      07/641,060                   03/02/93
5,189,833                      07/848,676                   03/02/93
5,189,841                      07/195,307                   03/02/93
5,189,843                      07/575,281                   03/02/93
5,189,844                      07/813,467                   03/02/93
5,189,850                      07/830,059                   03/02/93
5,189,851                      07/759,744                   03/02/93
5,189,855                      07/849,964                   03/02/93
5,189,856                      07/637,440                   03/02/93
5,189,858                      07/692,533                   03/02/93
5,189,859                      07/754,948                   03/02/93
5,189,863                      07/855,514                   03/02/93
5,189,864                      07/880,884                   03/02/93
5,189,865                      07/892,954                   03/02/93
5,189,866                      07/681,721                   03/02/93
5,189,867                      07/598,673                   03/02/93
5,189,869                      07/784,555                   03/02/93
5,189,872                      07/890,295                   03/02/93
5,189,873                      07/758,009                   03/02/93
5,189,881                      07/780,031                   03/02/93
5,189,882                      07/827,696                   03/02/93
5,189,888                      07/498,998                   03/02/93
5,189,889                      07/782,168                   03/02/93
5,189,890                      07/914,656                   03/02/93
5,189,891                      07/769,591                   03/02/93
5,189,893                      07/719,801                   03/02/93
5,189,894                      07/833,004                   03/02/93
5,189,907                      07/661,662                   03/02/93
5,189,918                      07/530,590                   03/02/93
5,189,922                      07/519,848                   03/02/93
5,189,926                      07/715,532                   03/02/93
5,189,929                      07/848,515                   03/02/93
5,189,930                      07/656,519                   03/02/93
5,189,940                      07/759,390                   03/02/93
5,189,942                      07/721,655                   03/02/93
5,189,950                      07/769,427                   03/02/93
5,189,952                      07/666,885                   03/02/93
5,189,960                      07/795,945                   03/02/93
5,189,965                      07/517,940                   03/02/93
5,189,966                      07/874,065                   03/02/93
5,189,978                      07/788,625                   03/02/93
5,189,981                      07/746,786                   03/02/93
5,189,986                      07/764,436                   03/02/93
5,189,989                      07/809,523                   03/02/93
5,189,994                      07/747,615                   03/02/93
5,190,010                      07/801,467                   03/02/93
5,190,016                      07/766,262                   03/02/93
5,190,033                      07/712,962                   03/02/93
5,190,040                      07/743,618                   03/02/93
5,190,049                      07/524,847                   03/02/93
5,190,051                      07/508,801                   03/02/93
5,190,054                      07/736,538                   03/02/93
5,190,056                      07/834,488                   03/02/93
5,190,065                      07/799,815                   03/02/93
5,190,069                      07/874,501                   03/02/93
5,190,072                      07/889,191                   03/02/93
5,190,077                      07/783,630                   03/02/93
5,190,087                      07/901,861                   03/02/93
5,190,094                      07/381,658                   03/02/93
5,190,096                      07/620,460                   03/02/93
5,190,099                      07/695,145                   03/02/93
5,190,108                      07/746,695                   03/02/93
5,190,109                      07/770,815                   03/02/93
5,190,113                      07/746,898                   03/02/93
5,190,116                      07/778,707                   03/02/93
5,190,123                      07/724,188                   03/02/93
5,190,132                      07/458,723                   03/02/93
5,190,134                      07/809,920                   03/02/93
5,190,138                      07/667,105                   03/02/93
5,190,142                      07/664,086                   03/02/93
5,190,143                      07/836,018                   03/02/93
5,190,154                      07/759,414                   03/02/93
5,190,159                      07/856,305                   03/02/93
5,190,169                      07/710,041                   03/02/93
5,190,171                      07/726,743                   03/02/93
5,190,176                      07/814,696                   03/02/93
5,190,184                      07/907,375                   03/02/93
5,190,187                      07/789,840                   03/02/93
5,190,191                      07/668,959                   03/02/93
5,190,196                      07/772,109                   03/02/93
5,190,201                      07/837,564                   03/02/93
5,190,205                      07/785,494                   03/02/93
5,190,215                      07/785,281                   03/02/93
5,190,216                      07/687,840                   03/02/93
5,190,217                      07/749,914                   03/02/93
5,190,231                      07/712,067                   03/02/93
5,190,248                      07/610,237                   03/02/93
5,190,252                      07/497,881                   03/02/93
5,190,253                      07/827,313                   03/02/93
5,190,257                      07/772,226                   03/02/93
5,190,260                      07/758,335                   03/02/93
5,190,261                      07/837,643                   03/02/93
5,190,268                      07/822,362                   03/02/93
5,190,272                      07/631,370                   03/02/93
5,190,273                      07/684,507                   03/02/93
5,190,275                      07/405,704                   03/02/93
5,190,278                      07/689,803                   03/02/93
5,190,284                      07/885,181                   03/02/93
5,190,285                      07/767,585                   03/02/93
5,190,288                      07/811,256                   03/02/93
5,190,289                      07/669,721                   03/02/93
5,190,290                      07/788,927                   03/02/93
5,190,296                      07/796,787                   03/02/93
5,190,302                      07/782,744                   03/02/93
5,190,303                      07/873,700                   03/02/93
5,190,306                      07/830,183                   03/02/93
5,190,310                      07/634,160                   03/02/93
5,190,313                      07/741,348                   03/02/93
5,190,316                      07/751,995                   03/02/93
5,190,319                      07/769,444                   03/02/93
5,190,322                      07/756,095                   03/02/93
5,190,329                      07/833,115                   03/02/93
5,190,333                      07/681,294                   03/02/93
5,190,339                      07/901,964                   03/02/93
5,190,343                      07/748,750                   03/02/93
5,190,346                      07/912,560                   03/02/93
5,190,361                      07/814,601                   03/02/93
5,190,362                      07/726,675                   03/02/93
5,190,367                      07/784,080                   03/02/93
5,190,368                      07/846,818                   03/02/93
5,190,371                      07/640,307                   03/02/93
5,190,375                      07/568,721                   03/02/93
5,190,380                      07/806,375                   03/02/93
5,190,387                      07/851,079                   03/02/93
5,190,393                      07/613,555                   03/02/93
5,190,396                      07/768,576                   03/02/93
5,190,401                      07/690,117                   03/02/93
5,190,406                      07/806,640                   03/02/93
5,190,407                      07/817,286                   03/02/93
5,190,412                      07/864,642                   03/02/93
5,190,415                      07/754,509                   03/02/93
5,190,416                      07/758,737                   03/02/93
5,190,419                      07/717,644                   03/02/93
5,190,428                      07/475,987                   03/02/93
5,190,429                      07/728,614                   03/02/93
5,190,435                      07/277,252                   03/02/93
5,190,436                      07/710,850                   03/02/93
5,190,441                      07/566,203                   03/02/93
5,190,442                      07/755,646                   03/02/93
5,190,443                      07/706,599                   03/02/93
5,190,447                      07/855,827                   03/02/93
5,190,455                      07/309,152                   03/02/93
5,190,463                      07/797,575                   03/02/93
5,190,464                      07/895,185                   03/02/93
5,190,469                      07/893,037                   03/02/93
5,190,470                      07/797,494                   03/02/93
5,190,473                      07/884,790                   03/02/93
5,190,474                      07/898,460                   03/02/93
5,190,475                      07/831,723                   03/02/93
5,190,484                      07/929,531                   03/02/93
5,190,485                      07/829,696                   03/02/93
5,190,510                      07/755,482                   03/02/93
5,190,511                      07/754,442                   03/02/93
5,190,512                      07/788,925                   03/02/93
5,190,513                      07/748,025                   03/02/93
5,190,514                      07/776,087                   03/02/93
5,190,519                      07/704,330                   03/02/93
5,190,526                      07/946,662                   03/02/93
5,190,529                      07/703,321                   03/02/93
5,190,539                      07/550,519                   03/02/93
5,190,564                      07/828,299                   03/02/93
5,190,567                      07/653,313                   03/02/93
5,190,569                      07/714,668                   03/02/93
5,190,572                      07/664,874                   03/02/93
5,190,575                      07/809,649                   03/02/93
5,190,578                      07/802,826                   03/02/93
5,190,580                      07/782,624                   03/02/93
5,190,587                      07/884,419                   03/02/93
5,190,588                      07/752,051                   03/02/93
5,190,592                      07/684,371                   03/02/93
5,190,598                      07/867,996                   03/02/93
5,190,599                      07/586,983                   03/02/93
5,190,601                      07/808,154                   03/02/93
5,190,603                      07/721,407                   03/02/93
5,190,605                      07/762,810                   03/02/93
5,190,610                      07/784,131                   03/02/93
5,190,611                      07/654,938                   03/02/93
5,190,616                      07/566,462                   03/02/93
5,190,623                      07/335,661                   03/02/93
5,190,638                      07/805,348                   03/02/93
5,190,644                      07/843,531                   03/02/93
5,190,651                      07/720,263                   03/02/93
5,190,659                      07/549,596                   03/02/93
5,190,667                      07/717,654                   03/02/93
5,190,669                      07/797,606                   03/02/93
5,190,670                      07/882,968                   03/02/93
5,190,671                      07/769,776                   03/02/93
5,190,672                      07/703,096                   03/02/93
5,190,676                      07/620,110                   03/02/93
5,190,682                      07/857,906                   03/02/93
5,190,686                      07/395,058                   03/02/93
5,190,687                      07/413,625                   03/02/93
5,190,689                      07/746,219                   03/02/93
5,190,697                      07/629,249                   03/02/93
5,190,703                      07/633,547                   03/02/93
5,190,704                      07/768,517                   03/02/93
5,190,707                      07/783,774                   03/02/93
5,190,708                      07/089,327                   03/02/93
5,190,710                      07/659,213                   03/02/93
5,190,716                      07/794,056                   03/02/93
5,190,721                      07/812,465                   03/02/93
5,190,725                      07/692,195                   03/02/93
5,190,729                      07/655,648                   03/02/93
5,190,735                      07/860,617                   03/02/93
5,190,736                      07/779,550                   03/02/93
5,190,741                      07/741,481                   03/02/93
5,190,743                      07/774,494                   03/02/93
5,190,751                      07/766,911                   03/02/93
5,190,761                      07/537,191                   03/02/93
5,190,769                      07/826,826                   03/02/93
5,190,773                      07/793,901                   03/02/93
5,190,777                      07/519,353                   03/02/93
5,190,780                      07/691,690                   03/02/93
5,190,785                      07/710,064                   03/02/93
5,190,786                      07/839,527                   03/02/93
5,190,792                      07/413,357                   03/02/93
5,190,799                      07/697,807                   03/02/93
5,190,800                      07/716,875                   03/02/93
5,190,801                      07/631,939                   03/02/93
5,190,817                      07/611,526                   03/02/93
5,190,819                      07/765,786                   03/02/93
5,190,828                      07/725,797                   03/02/93
5,190,830                      07/722,145                   03/02/93
5,190,832                      07/811,066                   03/02/93
5,190,833                      07/633,518                   03/02/93
5,190,848                      07/623,731                   03/02/93
5,190,854                      07/727,818                   03/02/93
5,190,861                      07/348,701                   03/02/93
5,190,866                      07/826,371                   03/02/93
5,190,874                      07/401,507                   03/02/93
5,190,879                      07/742,084                   03/02/93
5,190,881                      07/831,017                   03/02/93
5,190,889                      07/803,930                   03/02/93
5,190,890                      07/742,597                   03/02/93
5,190,908                      07/719,408                   03/02/93
5,190,909                      07/613,018                   03/02/93
5,190,912                      07/806,986                   03/02/93
5,190,914                      07/662,457                   03/02/93
5,190,916                      07/157,508                   03/02/93
5,190,921                      07/825,294                   03/02/93
5,190,922                      07/710,209                   03/02/93
5,190,923                      07/710,283                   03/02/93
5,190,929                      07/198,406                   03/02/93
5,190,932                      07/551,591                   03/02/93
5,190,934                      07/845,869                   03/02/93
5,190,940                      07/796,500                   03/02/93
5,190,947                      07/746,676                   03/02/93
5,190,956                      07/579,919                   03/02/93
5,190,957                      07/852,922                   03/02/93
5,190,964                      07/480,448                   03/02/93
5,190,965                      07/891,545                   03/02/93
5,190,967                      07/711,068                   03/02/93
5,190,971                      07/798,386                   03/02/93
5,190,974                      07/725,985                   03/02/93
5,190,977                      07/795,513                   03/02/93
5,190,979                      07/896,735                   03/02/93
5,190,983                      07/651,936                   03/02/93
5,190,985                      07/768,990                   03/02/93
5,190,988                      07/706,706                   03/02/93
5,191,000                      07/697,988                   03/02/93
5,191,003                      07/741,617                   03/02/93
5,191,007                      07/755,086                   03/02/93
5,191,010                      07/601,048                   03/02/93
5,191,012                      07/677,010                   03/02/93
5,191,019                      07/768,975                   03/02/93
5,191,025                      07/831,788                   03/02/93
5,191,027                      07/522,025                   03/02/93
5,191,028                      07/752,897                   03/02/93
5,191,030                      07/762,112                   03/02/93
5,191,031                      07/798,038                   03/02/93
5,191,032                      07/796,384                   03/02/93
5,191,034                      07/901,478                   03/02/93
5,191,035                      07/768,009                   03/02/93
5,191,037                      07/778,276                   03/02/93
5,191,044                      07/772,804                   03/02/93
5,191,049                      07/813,888                   03/02/93
5,191,050                      07/729,789                   03/02/93
5,191,059                      07/685,378                   03/02/93
5,191,087                      07/914,574                   03/02/93
5,191,089                      07/565,536                   03/02/93
5,191,091                      07/825,339                   03/02/93
5,191,092                      07/588,793                   03/02/93
5,191,102                      07/913,345                   03/02/93
5,191,109                      07/648,893                   03/02/93
5,191,112                      07/571,871                   03/02/93
5,191,113                      07/802,605                   03/02/93
5,191,115                      07/623,715                   03/02/93
5,191,127                      07/743,074                   03/02/93
5,191,129                      07/877,642                   03/02/93
5,191,133                      07/704,574                   03/02/93
5,191,137                      07/873,843                   03/02/93
5,191,153                      07/787,151                   03/02/93
5,191,156                      07/868,143                   03/02/93
5,191,157                      07/680,949                   03/02/93
5,191,162                      07/755,338                   03/02/93
5,191,163                      07/864,912                   03/02/93
5,191,164                      07/678,430                   03/02/93
5,191,165                      07/769,258                   03/02/93
5,191,167                      07/890,429                   03/02/93
5,191,168                      07/828,321                   03/02/93
5,191,172                      07/788,807                   03/02/93
5,191,180                      07/728,368                   03/02/93
5,191,181                      07/561,059                   03/02/93
5,191,184                      07/780,467                   03/02/93
5,191,191                      07/665,941                   03/02/93
5,191,202                      07/668,638                   03/02/93
5,191,206                      07/685,858                   03/02/93
5,191,208                      07/764,215                   03/02/93
5,191,210                      07/819,732                   03/02/93
5,191,211                      07/856,263                   03/02/93
5,191,214                      07/621,892                   03/02/93
5,191,220                      07/751,180                   03/02/93
5,191,224                      07/627,881                   03/02/93
5,191,225                      07/784,465                   03/02/93
5,191,233                      07/847,930                   03/02/93
5,191,235                      07/827,000                   03/02/93
5,191,251                      07/650,598                   03/02/93
5,191,252                      07/873,094                   03/02/93
5,191,253                      07/726,756                   03/02/93
5,191,255                      07/656,798                   03/02/93
5,191,266                      07/480,637                   03/02/93
5,191,267                      07/837,899                   03/02/93
5,191,272                      07/776,418                   03/02/93
5,191,278                      07/780,600                   03/02/93
5,191,280                      07/735,596                   03/02/93
5,191,284                      07/723,746                   03/02/93
5,191,288                      07/721,701                   03/02/93
5,191,289                      07/638,162                   03/02/93
5,191,296                      07/762,349                   03/02/93
5,191,301                      07/881,960                   03/02/93
5,191,304                      07/661,874                   03/02/93
5,191,305                      07/725,010                   03/02/93
5,191,309                      07/749,801                   03/02/93
5,191,311                      07/900,373                   03/02/93
5,191,314                      07/575,974                   03/02/93
5,191,323                      07/681,611                   03/02/93
5,191,324                      07/650,756                   03/02/93
5,191,329                      07/436,080                   03/02/93
5,191,335                      07/612,726                   03/02/93
5,191,343                      07/836,668                   03/02/93
5,191,345                      07/793,095                   03/02/93
5,191,346                      07/706,003                   03/02/93
5,191,358                      07/669,058                   03/02/93
5,191,362                      07/657,851                   03/02/93
5,191,366                      07/671,485                   03/02/93
5,191,391                      07/647,716                   03/02/93
5,191,392                      07/757,054                   03/02/93
5,191,394                      07/783,747                   03/02/93
5,191,407                      07/641,547                   03/02/93
5,191,416                      07/637,486                   03/02/93
5,191,418                      07/658,335                   03/02/93
5,191,419                      07/690,620                   03/02/93
5,191,458                      07/713,503                   03/02/93
5,191,461                      07/702,448                   03/02/93
5,191,481                      07/757,221                   03/02/93
5,191,483                      07/756,062                   03/02/93
5,191,485                      07/762,719                   03/02/93
5,191,486                      07/860,323                   03/02/93
5,191,495                      07/601,785                   03/02/93
5,191,500                      07/580,453                   03/02/93
5,191,502                      07/655,853                   03/02/93
5,191,503                      07/679,188                   03/02/93
5,191,509                      07/806,080                   03/02/93
5,191,515                      07/719,712                   03/02/93
5,191,516                      07/673,480                   03/02/93
5,191,518                      07/745,425                   03/02/93
5,191,520                      07/730,898                   03/02/93
5,191,522                      07/467,843                   03/02/93
5,191,530                      07/737,725                   03/02/93
5,191,544                      07/538,438                   03/02/93
5,191,560                      07/774,968                   03/02/93
5,191,562                      07/585,342                   03/02/93
5,191,574                      07/664,767                   03/02/93
5,191,594                      07/798,780                   03/02/93
5,191,599                      07/790,588                   03/02/93
5,191,615                      07/466,507                   03/02/93
5,191,627                      07/586,644                   03/02/93
5,191,633                      07/842,111                   03/02/93
5,191,646                      07/765,462                   03/02/93
5,191,647                      07/652,318                   03/02/93
5,191,650                      07/393,923                   03/02/93

                    PATENTS WHICH EXPIRED ON March 4, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                           Serial                        Issue
Number                           Number                         Date

5,606,749                      08/445,190                   03/04/97
5,606,750                      08/393,421                   03/04/97
5,606,753                      08/471,520                   03/04/97
5,606,755                      08/417,518                   03/04/97
5,606,756                      08/626,474                   03/04/97
5,606,757                      08/433,140                   03/04/97
5,606,758                      08/543,737                   03/04/97
5,606,760                      08/486,914                   03/04/97
5,606,761                      08/546,817                   03/04/97
5,606,764                      08/443,367                   03/04/97
5,606,765                      08/523,166                   03/04/97
5,606,768                      08/516,951                   03/04/97
5,606,772                      08/382,694                   03/04/97
5,606,777                      08/524,793                   03/04/97
5,606,779                      08/654,096                   03/04/97
5,606,798                      07/946,380                   03/04/97
5,606,803                      08/510,974                   03/04/97
5,606,804                      08/546,878                   03/04/97
5,606,806                      08/418,127                   03/04/97
5,606,807                      08/578,356                   03/04/97
5,606,814                      08/505,197                   03/04/97
5,606,816                      08/431,856                   03/04/97
5,606,818                      08/426,267                   03/04/97
5,606,821                      08/257,257                   03/04/97
5,606,822                      08/646,051                   03/04/97
5,606,826                      08/413,717                   03/04/97
5,606,830                      08/411,120                   03/04/97
5,606,853                      08/430,386                   03/04/97
5,606,854                      08/425,914                   03/04/97
5,606,857                      08/500,220                   03/04/97
5,606,859                      08/103,546                   03/04/97
5,606,868                      08/399,945                   03/04/97
5,606,873                      08/480,368                   03/04/97
5,606,874                      08/617,436                   03/04/97
5,606,879                      08/450,487                   03/04/97
5,606,886                      08/374,138                   03/04/97
5,606,888                      08/502,647                   03/04/97
5,606,894                      08/511,726                   03/04/97
5,606,896                      08/383,916                   03/04/97
5,606,901                      08/436,373                   03/04/97
5,606,904                      08/544,114                   03/04/97
5,606,908                      08/331,194                   03/04/97
5,606,916                      08/428,666                   03/04/97
5,606,926                      08/532,238                   03/04/97
5,606,928                      08/458,257                   03/04/97
5,606,929                      08/687,097                   03/04/97
5,606,930                      08/622,200                   03/04/97
5,606,933                      08/394,245                   03/04/97
5,606,935                      08/331,471                   03/04/97
5,606,939                      08/550,512                   03/04/97
5,606,944                      08/618,316                   03/04/97
5,606,945                      08/363,048                   03/04/97
5,606,947                      08/412,584                   03/04/97
5,606,961                      08/326,537                   03/04/97
5,606,963                      08/350,417                   03/04/97
5,606,964                      08/525,961                   03/04/97
5,606,966                      08/373,232                   03/04/97
5,606,967                      08/566,087                   03/04/97
5,606,982                      08/308,384                   03/04/97
5,606,984                      08/351,345                   03/04/97
5,606,986                      08/377,100                   03/04/97
5,606,987                      08/413,480                   03/04/97
5,607,004                      08/501,558                   03/04/97
5,607,005                      08/489,417                   03/04/97
5,607,006                      08/339,356                   03/04/97
5,607,007                      08/325,898                   03/04/97
5,607,010                      08/423,986                   03/04/97
5,607,020                      08/186,330                   03/04/97
5,607,021                      08/488,772                   03/04/97
5,607,022                      08/401,957                   03/04/97
5,607,030                      08/573,191                   03/04/97
5,607,042                      08/356,874                   03/04/97
5,607,053                      08/311,225                   03/04/97
5,607,055                      08/403,996                   03/04/97
5,607,060                      08/469,607                   03/04/97
5,607,064                      08/390,536                   03/04/97
5,607,065                      08/368,621                   03/04/97
5,607,066                      08/415,307                   03/04/97
5,607,070                      08/262,537                   03/04/97
5,607,090                      08/365,040                   03/04/97
5,607,092                      08/350,825                   03/04/97
5,607,093                      08/490,172                   03/04/97
5,607,103                      08/526,870                   03/04/97
5,607,104                      08/415,496                   03/04/97
5,607,107                      08/120,247                   03/04/97
5,607,109                      08/356,565                   03/04/97
5,607,112                      08/517,738                   03/04/97
5,607,115                      08/235,528                   03/04/97
5,607,116                      08/272,430                   03/04/97
5,607,119                      08/543,796                   03/04/97
5,607,121                      08/562,996                   03/04/97
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