Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 11/17/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

Re. 34,517       07/909,197        07/06/92        01/25/94       11/22/00
4,760,675        06/945,821        12/24/86        08/02/88       11/22/00
4,774,058        06/780,312        09/26/85        09/27/88       11/22/00
4,968,993        07/323,399        03/14/89        11/06/90       11/21/00
5,020,773        07/468,409        01/22/90        06/04/91       11/21/00
5,102,442        07/624,489        12/06/90        04/07/92       11/20/00
5,121,621        07/658,076        02/20/91        06/16/92       11/22/00
5,364,369        07/791,399        11/14/91        11/15/94       11/21/00
5,407,179        07/887,875        05/26/92        04/18/95       11/21/00
5,432,207        08/328,694        10/25/94        07/11/95       11/21/00
5,433,111        08/245,711        05/05/94        07/18/95       11/17/00
5,465,734        08/223,332        04/05/94        11/14/95       11/21/00
5,514,725        08/477,821        06/07/95        05/07/96       11/21/00
5,557,320        08/380,997        01/31/95        09/17/96       11/21/00
5,571,539        08/367,396        12/30/94        11/05/96       11/22/00