Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 08/18/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

4,592,089        06/523,449        08/15/83        05/27/86       02/21/00
4,646,167        06/738,032        05/24/85        02/24/87       08/23/00
4,659,136        06/862,327        05/12/86        04/21/87       08/24/00
4,667,773        06/879,817        06/27/86        05/26/87       08/18/00
4,700,629        06/859,165        05/02/86        10/20/87       08/18/00
4,737,322        06/781,232        09/27/85        04/12/88       08/23/00
4,745,617        07/031,327        03/27/87        05/17/88       08/24/00
4,749,192        07/107,963        10/13/87        06/07/88       08/18/00
4,948,390        07/241,961        06/20/88        08/14/90       08/18/00
4,961,452        07/346,692        05/03/89        10/09/90       08/24/00
5,012,931        07/571,333        08/22/90        05/07/91       08/24/00
5,055,805        07/416,192        10/02/89        10/08/91       08/23/00
5,103,458        07/667,148        03/11/91        04/07/92       08/24/00
5,103,992        07/762,650        09/19/91        04/14/92       08/18/00
5,107,226        07/648,149        01/30/91        04/21/92       08/23/00
5,121,402        07/593,417        09/28/90        06/09/92       08/18/00
5,199,954        07/840,522        02/25/92        04/06/92       08/18/00
5,328,207        07/797,362        11/25/91        07/12/94       08/22/00
5,359,371        07/842,428        02/27/92        10/25/94       08/24/00
5,375,492        08/065,935        05/24/93        12/27/94       08/22/00
5,408,911        08/168,267        12/14/93        04/25/95       08/24/00
5,417,835        08/137,373        10/14/93        05/23/95       08/23/00
5,445,889        08/252,381        06/01/94        08/29/95       08/22/00
5,452,313        08/210,481        03/21/94        09/19/95       08/23/00
5,456,366        08/217,573        03/24/94        10/10/95       08/18/00
5,491,486        08/233,091        04/25/94        02/13/96       08/18/00
5,523,228        08/499,348        07/07/95        06/04/96       08/18/00
5,523,290        08/240,802        05/10/94        06/04/96       08/18/00
5,528,367        08/302,013        09/09/94        06/18/96       08/24/00
5,529,841        08/321,182        09/29/94        06/25/96       08/24/00