Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 09/08/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,642,271        06/700,246        02/11/85        02/10/87       09/08/00
4,745,660        07/075,087        07/20/87        05/24/88       09/13/00
4,751,793        07/020,032        02/27/87        06/21/88       09/14/00
4,798,054        07/106,428        10/08/87        01/17/89       09/14/00
4,955,974        07/470,991        01/18/90        09/11/90       09/12/00
4,964,921        07/350,914        05/12/89        10/23/90       09/13/00
4,991,454        07/526,157        05/21/90        02/12/91       09/13/00
4,991,455        07/521,799        05/10/90        02/12/91       09/11/00
5,013,347        07/373,285        06/29/89        05/07/91       09/12/00
5,033,088        07/453,108        12/21/89        07/16/91       09/14/00
5,053,359        07/523,982        05/16/90        10/01/91       09/14/00
5,063,863        07/563,488        08/07/90        11/12/91       09/14/00
5,081,327        07/500,693        03/28/90        01/14/92       09/08/00
5,086,085        07/717,581        06/19/91        02/04/92       09/14/00
5,088,170        07/455,345        02/28/90        02/18/92       09/11/00
5,105,932        07/491,113        03/09/90        04/21/92       09/11/00
5,110,833        07/500,892        03/29/90        05/05/92       09/08/00
5,111,597        07/352,845        05/16/89        05/12/92       09/14/00
5,125,911        07/483,195        02/20/90        06/30/92       09/13/00
5,128,168        07/536,773        06/12/90        07/07/92       09/12/00
5,133,996        07/784,289        10/29/91        07/28/92       09/12/00
5,134,950        07/365,611        06/13/89        08/04/92       09/11/00
5,157,691        07/498,672        03/26/90        10/20/92       09/11/00
5,328,614        07/816,652        01/03/92        07/12/94       09/14/00
5,341,935        08/061,285        04/29/93        08/30/94       09/12/00
5,341,993        07/995,556        12/21/92        08/30/94       09/13/00
5,395,794        08/052,076        04/22/93        03/07/95       09/11/00
5,434,982        07/714,197        06/12/91        07/18/95       09/14/00
5,474,719        07/655,681        02/14/91        12/12/95       09/14/00
5,505,109        08/233,519        04/26/94        04/09/96       09/13/00
5,522,764        08/298,799        08/31/94        06/04/96       09/14/00
5,525,746        08/256,258        06/30/94        06/11/96       09/12/00
5,533,104        07/961,071        10/14/92        07/02/96       09/08/00
5,533,968        08/250,809        05/27/94        07/09/96       09/12/00
5,542,873        08/385,173        02/07/95        08/06/96       09/08/00
5,551,539        08/441,558        05/16/95        09/03/96       09/14/00