Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 08/25/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,600,118        06/576,478        02/02/84        07/15/86       08/29/00
4,649,191        06/608,708        05/10/84        03/10/87       08/29/00
4,665,781        06/704,792        02/25/85        05/19/87       08/25/99
4,676,504        06/820,089        01/21/86        06/30/87       08/30/00
4,709,315        06/934,516        11/24/86        11/24/87       08/30/00
4,747,069        07/070,083        07/02/87        05/24/88       08/25/00
4,775,158        07/008,842        01/30/87        10/04/88       08/30/00
4,812,246        07/160,027        02/25/88        03/14/89       08/30/00
4,935,114        07/244,779        09/15/88        06/19/90       08/25/00
4,967,480        07/349,982        05/08/89        11/06/90       08/25/00
5,056,118        07/353,137        05/16/89        10/08/91       08/28/00
5,078,508        07/684,997        04/15/91        01/07/92       08/28/00
5,086,998        07/484,420        02/26/90        02/11/92       08/25/00
5,099,529        07/678,644        04/01/91        03/31/92       08/29/00
5,117,087        07/567,074        08/14/90        05/26/92       08/25/00
5,119,383        07/635,016        12/28/90        06/02/92       08/25/00
5,125,916        07/680,315        04/04/91        06/30/92       08/28/00
5,126,674        07/574,182        08/29/90        06/30/92       08/25/00
5,307,650        07/935,850        08/26/92        05/03/94       08/25/00
5,337,535        07/886,749        05/20/92        08/16/94       08/25/00
5,340,131        08/063,647        05/20/93        08/23/94       08/29/00
5,340,671        08/077,987        06/14/93        08/23/94       08/29/00
5,358,679        08/055,524        04/29/93        10/25/94       08/25/00
5,361,781        08/040,915        03/30/93        11/08/94       08/28/00
5,388,376        08/020,681        02/22/93        02/14/95       08/31/00
5,406,419        08/132,757        10/06/93        04/11/95       08/29/00
5,423,597        07/934,797        08/24/92        06/13/95       08/30/00
5,453,674        08/244,428        05/26/94        09/26/95       08/25/00
5,459,035        07/987,678        12/09/92        10/17/95       08/25/00
5,471,850        98/273,378        07/01/94        12/05/95       08/31/00
5,481,926        08/353,505        12/09/94        01/09/96       08/30/00
5,492,622        08/359,406        12/20/94        02/20/96       08/25/00
5,502,213        08/184,689        01/21/94        03/26/96       08/28/00
5,504,223        08/186,402        01/25/94        04/02/96       08/25/00
5,512,269        08/074,315        06/09/93        04/30/96       08/30/00
5,517,703        08/356,451        12/14/94        05/21/96       08/30/00
5,517,727        08/299,024        08/31/94        05/21/96       08/25/00
5,518,436        08/273,381        07/11/94        05/21/96       08/30/00
5,525,800        08/332,294        10/31/94        06/11/96       08/25/00
5,526,170        08/102,934        08/06/93        06/11/96       08/25/00
5,528,611        08/389,463        02/16/95        06/18/96       08/25/00
5,530,448        06/559,062        12/05/83        06/25/96       08/25/00
5,532,057        08/430,049        04/27/95        07/02/96       08/25/00
5,532,979        06/304,417        09/09/81        07/02/96       08/25/00
5,534,311        08/454,982        05/31/95        07/09/96       08/25/00
5,535,176        08/082,648        06/28/93        07/09/96       08/25/00
5,535,232        08/381,243        01/31/95        07/09/96       08/25/00
5,538,033        08/456,948        06/01/95        07/23/96       08/25/00
5,541,946        08/339,993        10/31/94        07/30/96       08/30/00