Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 09/01/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,698,417        06/831,955        02/24/86        10/06/87       09/05/00
4,705,962        06/918,235        10/14/86        11/10/87       09/01/00
4,709,400        06/865,753        05/22/86        11/24/87       09/01/00
4,814,333        07/154,338        02/10/88        03/21/89       09/05/00
4,959,492        07/380,567        07/14/89        09/25/90       09/06/00
5,041,097        07/485,285        02/26/90        08/20/91       09/01/00
5,299,424        07/993,435        12/21/92        04/05/94       09/05/00
5,339,483        08/060,492        05/11/93        08/23/94       09/07/00
5,342,710        08/040,228        03/30/93        08/30/94       09/05/00
5,419,287        08/155,709        11/22/93        05/30/95       09/07/00
5,505,273        08/185,645        01/24/94        04/09/96       09/05/00
5,560,799        08/172,378        12/22/93        10/01/96       09/01/00