United States Patent and Trademark Office OG Notices: 29 January 2002

                 Patents Reinstated Due to the Acceptance of a
                     Late Maintenance Fee from 12/31/01

Patent           Serial            Filing        Issue           Granted
Number           Number            Date          Date               Date

5,245,988        07/614,386        11/14/90      09/21/93       12/31/01
5,507,396        08/346,490        11/29/94      04/16/96       12/31/01
5,564,981        08/194,576        02/10/94      10/15/96       12/31/01
5,605,233        08/380,025        01/30/95      02/25/97       12/31/01
5,665,387        08/299,936        09/01/94      09/09/97       12/31/01
5,685,434        08/552,472        11/09/95      11/11/97       12/31/01