United States Patent and Trademark Office OG Notices: 15 January 2002

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 12/17/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,588,577       06/709,527      03/08/85        05/13/86        12/20/01
4,846,597       07/173,369      03/25/88        07/11/89        12/21/01
4,852,668       07/140,488      01/04/88        08/01/89        12/20/01
4,860,786       07/093,133      09/03/87        08/29/89        12/20/01
4,871,956       07/158,285      02/18/88        10/03/89        12/21/01
5,101,943       07/621,159      11/30/90        04/07/92        12/21/01
5,104,165       07/756,836      09/09/91        04/14/92        12/20/01
5,148,462       07/682,146      04/08/91        09/15/92        12/19/01
5,179,998       07/825,266      01/24/92        01/19/93        12/21/01
5,191,985       06/816,281      01/06/86        03/09/93        12/21/01
5,206,062       07/887,582      05/20/92        04/27/93        12/21/01
5,235,558       07/887,204      05/21/92        08/10/93        12/21/01
5,242,385       07/773,132      10/08/91        09/07/93        12/21/01
5,246,222       07/924,625      08/03/92        09/21/93        12/21/01
5,505,850       08/316,099      09/30/94        04/09/96        12/21/01
5,642,288       08/337,643      11/10/94        06/24/97        12/21/01
5,651,970       08/483,745      06/07/95        07/29/97        12/21/01