Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 10/20/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,671,543        06/890,086        07/24/86        06/09/87       10/23/00
4,726,048        06/596,357        04/03/84        02/16/88       10/20/00
4,756,430        07/127,051        12/01/87        07/12/88       10/25/00
4,762,483        07/059,329        06/08/87        08/09/88       10/25/00
4,971,020        07/320,325        03/08/89        11/20/90       10/24/00
4,987,354        07/457,761        01/03/90        01/22/91       10/23/00
5,002,579        07/049,989        05/15/87        03/26/91       10/24/00
5,003,984        07/473,061        01/31/90        04/02/91       10/25/00
5,084,004        07/449,942        12/29/89        01/28/92       10/23/00
5,101,688        07/710,363        06/03/91        04/07/92       10/20/00
5,122,251        07/650,788        02/04/91        06/16/92       10/20/00
5,129,823        07/773,156        10/08/91        07/14/92       10/26/00
5,135,442        07/478,677        02/12/90        08/04/92       10/23/00
5,137,442        07/652,094        02/07/91        08/11/92       10/26/00
5,150,907        07/712,249        06/07/91        09/29/92       10/26/00
5,357,786        08/101,871        08/04/93        10/25/94       10/26/00
5,365,496        08/184,926        01/24/94        11/15/94       10/26/00
5,366,830        08/016,962        02/12/93        11/22/94       10/24/00
5,450,768        08/209,914        03/14/94        09/19/95       10/23/00
5,464,085        08/226,745        04/12/94        11/07/95       10/24/00
5,465,378        08/135,167        10/12/93        11/07/95       10/25/00
5,476,150        08/286,318        07/08/94        12/19/95       10/20/00
5,476,276        08/273,082        07/08/94        12/19/95       10/20/00
5,488,371        08/236,500        04/29/94        01/30/96       10/25/00
5,510,999        08/300,636        09/02/94        04/23/96       10/24/00
5,513,734        08/254,019        06/03/94        05/07/96       10/20/00
5,522,644        08/110,579        08/23/93        06/04/96       10/24/00
5,530,200        08/067,983        05/27/93        06/25/96       10/20/00
5,531,336        08/212,022        03/11/94        07/02/96       10/25/00
5,535,846        08/461,452        06/05/95        07/16/96       10/24/00
5,542,925        08/387,977        02/13/95        08/06/96       10/26/00
5,544,445        08/382,514        02/01/95        08/13/96       10/25/00
5,544,466        08/337,301        11/10/94        08/13/96       10/26/00
5,553,111        08/329,295        10/26/94        09/03/96       10/20/00