Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 06/16/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,639,047        06/720,670        04/08/85        01/27/87       06/16/00
4,712,759        06/858,400        05/01/86        12/15/87       06/21/00
4,722,681        06/831,795        02/19/86        02/02/88       06/20/00
4,727,994        07/068,104        08/10/87        03/01/88       06/19/00
4,729,277        06/724,475        04/18/85        03/08/88       06/20/00
4,735,003        06/930,962        11/12/86        04/05/88       06/19/00
4,928,614        07/337,179        04/12/89        05/29/90       06/20/00
5,021,624        07/180,343        04/11/88        06/04/91       06/20/00
5,037,655        07/510,832        04/18/90        08/06/91       06/16/00
5,042,947        07/588,496        09/24/90        08/27/91       06/21/00
5,044,041        07/263,791        10/20/88        09/03/91       06/19/00
5,046,278        07/529,552        05/29/90        09/10/91       06/21/00
5,051,988        07/429,302        10/30/89        09/24/91       06/20/00
5,078,822        07/436,416        11/14/89        01/07/92       06/20/00
5,099,216        07/267,258        11/04/88        03/24/92       06/20/00
5,342,379        08/069,526        06/01/93        08/30/94       06/20/00
5,377,936        07/854,346        03/19/92        01/03/95       06/21/00
5,385,468        08/089,254        07/09/93        01/31/95       06/19/00
5,423,145        08/307,267        09/16/94        06/13/95       06/20/00
5,433,927        08/048,487        04/16/93        07/18/96       06/20/00
5,457,611        08/089,251        07/09/93        10/10/95       06/19/00
5,496,461        08/316,107        09/30/94        03/05/96       06/20/00