Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 12/01/00

Patent           Serial            Filing          Issue          Granted
Number           Number            Date            Date           Date

Re 36,070        08/833,017        04/03/97        02/02/99       12/07/00
4,517,448        06/319,096        11/06/81        05/14/85       12/07/00
4,595,571        06/647,994        09/05/84        06/17/86       12/07/00
4,721,625        06/936,922        11/28/86        01/26/88       12/06/00
4,770,906        06/725,007        04/19/85        09/13/88       12/06/00
5,015,331        07/566,860        08/10/90        05/14/91       12/07/00
5,051,232        07/465,830        01/16/90        09/24/91       12/06/00
5,110,491        07/688,801        04/22/91        05/05/92       12/01/00
5,115,919        07/739,309        08/01/91        05/26/92       12/01/00
5,194,209        07/858,385        03/25/92        03/16/93       12/01/00
5,201,436        07/881,761        05/12/92        04/13/93       12/07/00
5,363,074        07/963,190        10/19/92        11/08/94       12/01/00
5,368,890        08/052,394        04/23/93        11/29/94       12/06/00
5,371,627        07/964,640        10/23/92        12/06/94       12/04/00
5,415,934        08/184,855        01/21/94        05/16/95       12/01/00
5,418,283        08/221,605        04/01/94        05/23/95       12/06/00
5,441,355        08/248,399        05/24/94        08/15/95       12/06/00
5,444,126        08/201,035        02/24/94        08/22/95       12/01/00
5,448,789        08/170,717        12/21/93        09/12/95       12/06/00
5,469,591        08/301,408        09/08/94        11/28/95       12/06/00
5,485,860        07/952,644        09/28/92        01/23/96       12/07/00
5,531,424        08/047,942        04/19/93        07/02/96       12/01/00
5,535,594        08/347,365        12/02/94        07/16/96       12/06/00
5,536,556        08/086,157        07/02/93        07/16/96       12/06/00
5,538,830        08/430,874        04/28/95        07/23/96       12/06/00
5,540,447        08/310,217        09/21/94        07/30/96       12/01/00
5,559,683        08/316,282        09/30/94        09/24/96       12/06/00