Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 10/27/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

Re. 35,455       08/430,184        04/27/95        02/18/97       10/30/00
4,546,348        06/498,608        05/27/83        10/08/85       11/02/00
4,619,184        06/810,549        12/19/85        10/28/86       10/27/00
4,691,507        06/773,121        10/15/85        09/08/87       11/02/00
4,710,472        06/780,123        09/25/85        12/01/87       11/02/00
4,975,809        07/239,621        09/01/88        12/04/90       10/31/00
4,996,835        07/460,023        01/02/90        03/05/91       11/02/00
5,019,910        07/243,598        09/12/88        05/28/91       10/27/00
5,044,900        07/486,901        03/01/90        09/03/91       10/31/00
5,085,137        07/709,791        06/03/91        02/04/92       10/30/00
5,134,881        07/532,207        06/01/90        08/04/92       10/31/00
5,138,061        07/389,852        08/04/89        08/11/92       11/01/00
5,140,171        07/548,374        07/03/90        08/18/92       10/27/00
5,214,742        07/585,127        10/01/90        05/25/93       11/01/00
5,355,765        07/985,173        12/02/92        10/18/94       10/27/00
5,381,095        08/080,907        06/21/93        01/10/95       11/02/00
5,412,387        08/044,370        04/06/93        05/02/95       10/30/00
5,441,441        08/031,695        03/15/93        08/15/95       10/30/00
5,496,374        08/285,994        08/04/94        03/05/96       11/01/00
5,504,440        08/188,499        01/27/94        04/02/96       10/27/00
5,532,673        08/437,973        05/10/95        07/02/96       10/30/00
5,535,925        08/454,513        05/30/95        07/16/96       11/01/00
5,538,097        08/461,453        06/05/95        07/23/96       11/01/00
5,549,551        08/361,825        12/24/94        08/27/96       10/27/00