Patents Reinstated Due to the Acceptance of a
                       Late Maintenance Fee From 2/16/01

Patent          Serial          Filing          Issue          Granted
Number          Number          Date            Date           Date

5,061,927       07/560,949      07/31/90        10/29/91       02/22/01
5,072,216       07/447,566      12/07/89        12/10/91       02/20/01
5,083,648       07/645,172      01/24/91        01/28/92       02/20/01
5,125,158       07/314,614      02/23/89        06/30/92       02/22/01
5,132,974       07/426,565      10/24/89        07/21/92       02/16/01
5,181,482       07/807,445      12/13/91        01/26/93       02/20/01
5,344,542       07/809,031      12/16/91        09/06/94       02/16/01
5,385,565       08/148,674      11/03/93        01/31/95       02/20/01
5,389,075       08/076,469      06/14/93        02/14/95       02/20/01
5,403,000       08/252,924      06/02/94        04/04/95       02/20/01
5,406,029       08/079,129      06/17/93        04/11/95       02/22/01
5,484,267       08/214,288      03/17/94        01/16/96       02/22/01
5,515,116       08/216,528      03/22/94        05/07/96       02/20/01
5,543,139       08/259,137      06/13/94        08/06/96       02/20/01
5,551,646       08/211,026      05/13/94        09/03/96       02/20/01
5,566,829       08/488,904      06/09/95        10/22/96       02/22/01
5,620,133       08/302,244      09/08/94        04/15/97       02/22/01