United States Patent and Trademark Office OG Notices: 26 March 2002

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 2/18/2002

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,721,427       07/048,868      05/12/87        01/26/88        02/22/02
4,820,906       07/025,306      03/13/87        04/11/89        02/21/02
4,832,397       07/116,057      11/02/87        05/23/89        02/21/02
4,854,603       07/212,218      06/24/88        08/08/89        02/21/02
5,087,171       07/538,849      06/15/90        02/11/92        02/19/02
5,099,755       07/663,721      03/01/91        03/31/92        02/22/02
5,184,156       07/789,994      11/12/91        02/02/93        02/22/02
5,224,459       07/720,412      06/25/91        07/06/93        02/19/02
5,247,771       07/856,124      03/23/92        09/28/93        02/19/02
5,262,494       07/813,221      12/23/91        11/16/93        02/22/02
5,469,141       08/214,867      03/16/94        11/21/95        02/20/02
5,477,561       08/323,223      10/14/94        12/26/95        02/19/02
5,501,867       08/334,048      11/04/94        03/26/96        02/19/02
5,538,624       08/326,982      10/21/94        07/23/96        02/19/02
5,593,101       08/394,794      02/27/95        01/14/97        02/19/02
5,617,572       08/666,059      06/19/96        04/01/97        02/21/02
5,619,723       08/562,238      11/21/95        04/08/97        02/21/02
5,622,064       08/728,667      10/10/96        04/22/97        02/21/02
5,625,534       08/440,284      05/12/95        04/29/97        02/21/02
5,656,136       08/456,147      05/31/95        08/12/97        02/19/02
5,668,699       08/683,161      07/18/96        09/16/97        02/21/02
5,680,538       08/513,644      08/10/95        10/21/97        02/21/02
5,680,539       08/500,760      07/11/95        10/21/97        02/21/02
5,680,540       08/692,304      08/05/96        10/21/97        02/21/02
5,683,802       08/404,973      03/16/95        11/04/97        02/19/02
5,688,598       08/672,280      06/28/96        11/18/97        02/21/02
5,694,490       08/563,066      11/27/95        12/02/97        02/19/02