Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 10/13/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,961,617        07/381,954        07/19/89        10/09/90       10/17/00
4,992,147        07/190,630        05/05/88        02/12/91       10/16/00
5,073,830        07/462,416        01/09/90        12/17/91       10/18/00
5,118,647        07/631,229        12/21/90        06/02/92       10/18/00
5,134,944        07/662,362        02/28/91        08/04/92       10/17/00
5,141,819        07/657,286        02/19/91        08/25/92       10/18/00
5,354,303        07/836,087        02/14/92        10/11/94       10/17/00
5,356,140        08/047,715        04/14/93        10/18/94       10/18/00
5,358,297        08/148,949        11/08/93        10/25/94       10/13/00
5,376,633        08/122,204        09/15/93        12/27/94       10/19/00
5,447,320        08/273,081        07/08/94        09/05/95       10/17/00
5,499,646        08/261,114        06/14/94        03/19/96       10/16/00
5,507,760        08/149,587        11/09/93        04/16/96       10/16/00
5,507,795        08/236,485        04/29/94        04/16/96       10/16/00
5,515,905        08/183,261        01/19/94        05/14/96       10/16/00
5,518,061        08/199,413        02/22/94        05/21/96       10/18/00
5,526,914        08/226,612        04/12/94        06/18/96       10/13/00
5,529,109        08/394,915        02/27/95        06/25/96       10/18/00
5,542,192        08/119,927        09/10/93        08/06/96       10/13/00