Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 06/09/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,674,494        06/732,680        05/10/85        06/28/87       06/15/00
5,018,586        07/471,215        01/26/90        05/28/91       06/14/00
5,056,822        07/559,658        07/30/90        10/15/91       06/15/00
5,080,243        07/586,570        09/21/90        01/14/92       06/14/00
5,084,189        07/585,943        09/21/90        01/28/92       06/13/00
5,099,273        07/675,296        03/26/91        03/24/92       06/09/00
5,130,792        07/475,137        02/01/90        07/14/92       06/12/00
5,301,701        07/921,717        07/30/92        04/12/94       06/09/00
5,316,591        07/927,443        08/10/92        05/31/94       06/13/00
5,319,978        07/907,331        07/01/92        06/14/94       06/13/00
5,339,392        07/636,044        12/28/90        08/16/94       06/09/00
5,375,901        08/141,392        10/22/93        12/27/94       06/14/00
5,403,056        08/083,586        06/30/93        04/04/95       06/09/00
5,442,758        08/094,629        07/19/93        08/15/95       06/14/00
5,466,596        07/934,393        08/25/92        11/14/95       06/13/00
5,471,387        08/228,660        04/18/94        11/28/95       06/13/00
5,500,601        07/839,618        02/21/92        03/19/96       06/13/00
5,509,936        08/268,336        06/30/94        04/23/96       06/13/00

                 Patents Reinstated Due to the Acc eptance 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        07/18/95       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