Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 09/07/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,817,583       07/166,197      03/10/88        04/04/89        09/07/01
5,076,974       07/268,429      11/08/88        12/31/91        09/13/01
5,209,517       07/299,239      01/18/89        05/11/93        09/11/01
5,317,655       08/020,471      02/22/93        05/31/94        09/10/01
5,450,614       08/061,300      05/14/93        09/12/95        09/13/01
5,520,571       08/386,101      02/09/95        05/28/96        09/13/01
5,568,569       08/258,613      06/10/94        10/22/96        09/13/01
5,594,650       08/437,772      05/09/95        01/14/97        09/07/01
5,595,494       08/318,443      10/05/94        01/21/97        09/13/01
5,632,219       08/587,807      01/03/96        05/27/97        09/11/01
5,643,042       08/413,095      03/29/95        07/01/97        09/10/01
5,656,461       08/468,658      06/06/95        08/12/97        09/10/01
5,706,383       08/641,195      04/30/96        01/06/98        09/13/01