United States Patent and Trademark Office OG Notices: 09 April 2002

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 03/04/02

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,829,248       06/652,867      09/20/84        05/09/89        03/05/02
4,857,300       07/078,376      07/27/87        08/15/89        03/04/02
4,871,550       06/904,546      09/05/86        10/03/89        03/06/02
4,938,260       07/234,320      08/19/88        07/03/90        03/08/02
5,012,863       07/350,976      05/12/89        05/07/91        03/05/02
5,163,935       07/658,343      02/20/91        11/17/92        03/06/02
5,203,377       07/602,335      02/11/91        04/20/93        03/06/02
5,208,296       07/939,245      09/02/92        05/04/93        03/05/02
5,292,922       07/849,063      04/22/92        03/08/94        03/05/02
5,454,565       08/295,605      08/25/94        10/03/95        03/05/02
5,568,712       08/407,861      03/21/95        10/29/96        03/08/02
5,577,283       08/406,424      03/20/95        11/26/96        03/08/02
5,586,137       08/582,457      01/03/96        12/17/96        03/06/02
5,603,665       08/629,987      04/08/96        02/18/97        03/05/02
5,604,635       08/400,835      03/08/95        02/18/97        03/06/02
5,627,760       08/423,609      04/17/95        05/06/97        03/08/02
5,663,227       08/615,443      03/14/96        09/02/97        03/06/02
5,704,277       08/346,432      11/29/94        01/06/98        03/07/02