Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 06/30/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,887,859        07/138,194        11/19/87        12/19/89       06/30/00
5,403,341        08/185,549        01/24/94        04/04/95       07/05/00
5,421,583        08/192,438        02/07/94        06/06/95       06/30/00
5,483,387        08/279,762        07/22/94        01/09/96       06/30/00
5,504,903        08/192,958        02/07/94        04/02/96       07/05/00
5,504,963        08/231,040        04/22/94        04/09/96       06/30/00
5,505,000        08/298,137        08/30/94        04/09/96       06/30/00
5,516,024        08/366,302        12/29/94        05/14/96       06/30/00