United States Patent and Trademark Office OG Notices: 27 November 2001

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 10/12/01


Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,834,688       07/206,309      06/14/88        05/30/89        10/16/01
4,850,315       07/199,693      05/27/88        07/25/89        10/18/01
4,856,579       07/184,983      04/22/88        08/15/89        10/18/01
5,172,306       07/678,102      04/01/91        12/15/92        10/18/01
5,173,072       07/745,670      08/16/91        12/22/92        10/18/01
5,180,072       07/557,169      07/23/90        01/19/93        10/12/01
5,318,248       07/874,301      04/24/92        06/07/94        10/17/01
5,490,549       08/265,060      06/29/94        02/13/96        10/12/01
5,585,540       08/437,828      05/09/95        12/17/96        10/18/01
5,590,158       08/538,943      10/11/95        12/31/96        10/18/01
5,596,604       08/107,200      08/17/93        01/21/97        10/18/01
5,636,492       07/526,515      05/21/90        06/10/97        10/12/01
5,638,977       08/501,811      07/13/95        06/17/97        10/18/01
5,648,389       08/549,374      10/27/95        07/15/97        10/16/01
5,664,392       08/629,086      04/08/96        09/09/97        10/18/01