Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 09/29/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

Re 36,343        08/965,387        11/06/97        10/19/99        09/29/00
4,681,905        06/795,372        11/06/85        07/21/87        10/05/00
4,744,984        06/785,070        10/08/85        05/17/88        10/05/00
4,958,690        07/272,743        10/24/88        09/25/90        09/29/00
4,960,015        07/517,742        05/02/90        10/02/90        10/02/00
5,046,230        07/495,673        03/19/90        09/10/91        09/29/00
5,051,154        07/471,381        01/29/90        09/24/91        10/03/00
5,059,191        07/494,662        03/16/90        10/22/91        09/29/00
5,094,884        07/513,545        04/24/90        03/10/92        09/29/00
5,119,109        07/539,790        06/18/90        06/02/92        10/02/00
5,119,382        07/632,974        12/24/90        06/02/92        09/29/00
5,121,550        07/621,515        12/03/90        06/16/92        10/02/00
5,123,338        07/487,662        03/02/90        06/23/92        09/29/00
5,141,271        07/763,779        09/23/91        08/25/92        09/29/00
5,316,701        07/950,135        09/24/92        05/31/94        09/29/00
5,319,021        07/885,153        05/18/92        06/07/94        10/02/00
5,358,539        07/968,179        10/29/92        10/25/94        09/29/00
5,385,770        08/243,952        05/17/94        01/31/95        09/29/00
5,390,932        08/104,176        08/09/93        02/21/95        09/29/00
5,405,715        08/259,899        06/15/94        04/11/95        09/29/00
5,418,888        07/894,353        06/04/92        05/23/95        09/29/00
5,419,982        08/163,204        12/06/93        05/30/95        09/29/00
5,525,008        08/371,225        01/11/95        06/11/96        09/29/00
5,529,142        08/437,079        05/05/95        06/25/96        10/02/00
5,531,427        08/202,527        02/28/94        07/02/96        10/05/00
5,537,925        08/116,711        09/03/93        07/23/96        09/29/00
5,593,133        08/444,464        05/19/95        01/14/97        10/02/00