United States Patent and Trademark Office OG Notices: 12 February 2002

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 01/07/02

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,865,721       07/117,801      11/05/87        09/12/89        01/11/02
5,105,589       07/604,391      10/29/90        04/21/92        01/11/02
5,595,763       08/504,020      07/19/95        01/21/97        01/08/02
5,608,701       08/510,201      08/02/95        03/04/97        01/08/02