United States Patent and Trademark Office OG Notices: 28 May 2002

                 Patents Reinstated Due to the Acceptance of a
                     Late Maintenance Fee From 04/22/2002

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,846,148       07/191,997      05/09/88        07/11/89        04/24/02
4,851,684       07/028,636      03/20/87        07/25/89        04/26/02
5,099,135       07/562,331      08/03/90        03/24/92        04/24/02
5,104,699       07/610,504      11/08/90        04/14/92        04/25/02
5,126,272       07/318,800      03/02/89        06/30/92        04/24/02
5,137,345       07/700,445      05/15/91        08/11/92        04/24/02
5,177,447       07/610,213      11/06/90        01/05/93        04/22/02
5,233,141       07/727,757      07/09/91        08/03/93        04/26/02
5,284,536       07/744,336      08/13/91        02/08/94        04/22/02
5,542,893       08/198,081      02/16/94        08/06/96        04/24/02
5,571,542       08/425,478      04/20/95        11/05/96        04/26/02
5,581,964       07/972,163      11/05/92        12/10/96        04/26/02
5,635,955       08/438,538      05/10/95        06/03/97        04/26/02
5,636,263       08/534,341      09/27/95        06/03/97        04/22/02
5,653,206       08/674,719      07/02/96        08/05/97        04/26/02
5,672,924       08/704,300      10/15/96        09/30/97        04/22/02
5,675,703       08/420,156      04/11/95        10/07/97        04/23/02
5,708,565       08/673,340      06/28/96        01/13/98        04/26/02
5,710,047       08/516,953      08/18/95        01/20/98        04/22/02
5,724,715       08/674,472      07/02/96        03/10/98        04/22/02