United States Patent and Trademark Office OG Notices: 23 April 2002

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 3/18/2002

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,753,096       06/937,922      12/04/86        06/28/88        03/20/02
4,781,223       07/066,551      06/26/87        11/01/88        03/20/02
4,834,488       06/945,385      12/22/86        05/30/89        03/20/02
4,837,932       06/890,860      07/28/86        06/13/89        03/20/02
4,851,684       07/028,636      03/20/87        07/25/89        03/22/02
5,000,657       07/299,666      01/23/89        03/19/91        03/22/02
5,153,235       07/824,976      01/24/92        10/06/92        03/20/02
5,189,907       07/661,662      02/27/91        03/02/93        03/18/02
5,212,784       07/601,251      10/22/90        05/18/93        03/20/02
5,215,129       07/765,384      09/25/91        06/01/93        03/21/02
5,248,296       07/632,679      12/24/90        09/28/93        03/20/02
5,254,127       08/018,812      02/18/93        10/19/93        03/18/02
5,269,291       07/625,919      12/10/90        12/14/93        03/20/02
5,275,525       07/823,312      01/21/92        01/04/94        03/22/02
5,285,197       07/750,996      08/28/91        02/08/94        03/18/02
5,320,838       07/994,279      12/21/92        06/14/94        03/18/02
5,496,202       08/228,040      04/15/94        03/05/96        03/18/02
5,498,238       08/113,273      08/27/93        03/12/96        03/18/02
5,535,948       08/498,600      07/05/95        07/16/96        03/18/02
5,537,900       08/392,051      02/22/95        07/23/96        03/18/02
5,547,087       08/258,322      06/10/94        08/20/96        03/18/02
5,617,095       08/543,260      10/18/95        04/01/97        03/18/02
5,617,842       08/377,399      01/24/95        04/08/97        03/22/02
5,628,935       08/331,281      10/28/94        05/13/97        03/18/02
5,634,899       08/177,175      01/04/94        06/03/97        03/22/02
5,641,410       08/582,213      01/02/96        06/24/97        03/21/02
5,656,996       08/613,945      03/13/96        08/12/97        03/22/02
5,666,531       08/418,275      04/07/95        09/09/97        03/21/02
5,669,858       08/546,719      10/23/95        09/23/97        03/22/02
5,676,121       08/689,482      08/08/96        10/14/97        03/20/02
5,681,510       08/322,661      10/13/94        10/28/97        03/20/02
5,684,059       08/404,124      03/13/95        11/04/97        03/22/02
5,686,730       08/747,976      11/12/96        11/11/97        03/21/02
5,695,288       08/731,492      10/16/96        12/09/97        03/21/02
5,696,375       08/560,396      11/17/95        12/09/97        03/22/02
5,701,042       08/553,903      11/06/95        12/23/97        03/21/02
5,701,232       08/705,485      08/29/96        12/23/97        03/22/02
5,701,515       08/260,716      06/16/94        12/23/97        03/22/02
5,704,185       08/444,295      05/18/95        01/06/98        03/18/02
5,709,489       08/734,755      10/21/96        01/20/98        03/22/02
5,709,489       08/734,755      10/21/96        01/20/98        03/22/02
5,716,649       08/821,286      03/20/97        02/10/98        03/22/02
5,722,932       08/636,522      04/23/96        03/03/98        03/18/02
5,755,270       08/744,202      11/05/96        05/26/98        03/18/02
RE 36,136       08/627,598      04/04/96        03/09/99        03/21/02