Patent Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 08/27/99

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,882,524        07/180,373        04/12/88        11/21/89       08/31/99
4,918,764        07/206,251        06/13/88        04/24/90       08/27/99
4,978,335        07/414,371        09/29/89        12/18/90       08/27/99
5,015,998        07/391,430        08/09/89        05/14/91       09/01/99
5,031,823        07/622,374        12/05/90        07/16/91       09/01/99
5,276,487        07/875,221        04/28/92        01/04/94       08/27/99
5,303,709        07/808,479        12/16/91        04/19/94       08/31/99
5,345,198        08/075,230        06/10/93        09/06/94       09/02/99
5,351,704        08/063,510        05/18/93        10/04/94       08/27/99
5,356,288        07/987,458        12/07/92        10/18/94       08/27/99
5,369,827        07/484,219        02/21/90        12/06/94       09/01/99
5,382,596        08/102,436        08/05/93        01/17/95       09/01/99
5,398,133        08/141,634        10/27/93        03/14/95       08/31/99
5,403,090        07/850,313        03/12/92        04/04/95       08/27/99
5,411,425        07/812,879        12/20/91        05/02/95       09/01/99
5,413,328        08/199,478        02/22/94        05/09/95       08/31/99
5,415,551        08/129,245        09/28/93        05/16/95       08/31/99
5,423,164        08/210,940        03/21/94        06/13/95       08/31/99
5,427,703        08/071,428        06/02/93        06/27/95       08/27/99
5,428,606        08/083,593        06/30/93        06/27/95       08/31/99
5,430,270        08/018,644        02/17/93        07/04/95       09/01/99
5,450,505        07/972,703        11/06/92        09/12/95       09/01/99