Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 01/05/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,625,344       06/756,287      07/18/85        12/02/86        01/05/01
4,765,362       07/031,945      03/27/87        08/23/88        01/05/01
4,803,744       07/052,676      05/19/87        02/14/89        01/09/01
5,074,617       07/189,523      05/03/88        12/24/91        01/05/01
5,110,323       07/697,702      05/09/91        05/05/92        01/11/01
5,125,414       07/569,088      08/17/90        06/30192        01/05/01
5,143,087       07/660,678      02/25/91        09/01/92        01/11/01
5,165,501       07/735,927      07/25/91        11/24/92        01/08/01
5,300,893       07/851,334      03/16/92        04/05/94        01/10/01
5,363,073       07/963,191      10/19/92        11/08/94        01/05/01
5,391,424       07/830,014      02/03/92        02/21/95        01/08/01
5,494,151       08/285,227      08/03/94        02/27/96        01/11/01
5,540,721       08/339,914      11/15/94        07/30/96        01/05/01
5,552,776       08/265,517      06/24/94        09/03/96        01/10/01
5,571,844       08/354,741      12/08/94        11/05/96        01/08/01
5,575,287       08/008,667      01/25/93        11/19/96        01/05/01
5,579,786       08/387,486      02/13/95        12/03/96        01/05/01