Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 12/08/00

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,739,692       06/866,743      05/27/86        04/26/88        12/13/00
4,789,488       07/088,991      08/21/87        12/06/88        12/13/00
5,005,065       07/334,131      04/06/89        04/02/91        12/12/00
5,027,535       07/594,545      10/09/90        07/02/91        12/08/00
5,082,251       07/501,490      03/30/90        01/21/92        12/11/00
5,127,976       07/414,731      09/27/89        07/07/92        12/11/00
5,134,271       07/665,211      03/06/91        07/28/92        12/14/00
5,259,341       07/986,115      12/04/92        11/09/93        12/13/00
5,514,557       08/254,398      06/06/94        05/07/96        12/13/00
5,546,695       08/416,502      04/04/95        08/20/96        12/11/00
5,567,607       08/424,221      04/19/95        10/22/96        12/12/00