United States Patent and Trademark Office OG Notices: 16 April 2002

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 03/11/02

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

RE. 33,613      07/402,658      09/05/89        06/18/91        03/13/02
4,721,424       06/880,460      06/30/86        01/26/88        03/11/02
4,743,795       06/874,098      06/13/86        05/10/88        03/12/02
4,773,300       06/658,334      10/05/84        09/27/88        03/14/02
4,835,328       07/184,399      04/21/88        05/30/89        03/13/02
4,863,195       07/103,654      10/02/87        09/05/89        03/14/02
4,876,728       07/124,408      11/20/87        10/24/89        03/13/02
5,192,888       07/759,605      09/13/91        03/09/93        03/14/02
5,198,631       07/757,821      09/11/91        03/30/93        03/13/02
5,208,296       07/939,245      09/02/92        05/04/93        03/11/02
5,213,921       07/827,851      01/30/92        05/25/93        03/15/02
5,227,703       07/871,929      04/21/92        07/13/93        03/13/02
5,233,141       07/727,757      07/09/91        08/03/93        03/13/02
5,236,794       07/912,518      07/13/92        08/17/93        03/13/02
5,241,840       07/933,247      08/21/92        09/07/93        03/13/02
5,247,052       07/891,779      06/01/92        09/21/93        03/13/02
5,248,298       07/869,673      04/16/92        09/28/93        03/11/02
5,249,725       07/914,523      07/17/92        10/05/93        03/13/02
5,268,548       07/880,261      05/08/92        12/07/93        03/13/02
5,269,388       07/791,565      11/12/91        12/14/93        03/14/02
5,271,830       07/624,726      12/10/90        12/21/93        03/12/02
5,492,302       08/016,737      02/11/93        02/20/96        03/13/02
5,528,075       08/375,874      01/20/95        06/18/96        03/14/02
5,567,151       08/326,860      10/21/94        10/22/96        03/15/02
5,588,240       08/215,094      03/18/94        12/31/96        03/14/02
5,630,496       08/413,832      03/30/95        05/20/97        03/13/02
5,643,754       08/249,013      05/25/94        07/01/97        03/11/02
5,653,764       08/197,958      02/17/94        08/05/97        03/14/02
5,654,609       08/496,623      06/29/95        08/05/97        03/14/02
5,654,609       08/496,623      06/29/95        08/05/97        03/14/02
5,658,310       08/464,294      06/05/95        08/19/97        03/13/02
5,660,684       08/620,777      03/22/96        08/26/97        03/12/02
5,660,769       08/532,643      11/11/95        08/26/97        03/12/02
5,669,997       08/502,160      07/13/95        09/23/97        03/15/02
5,671,914       08/553,972      11/06/95        09/30/97        03/14/02
5,673,838       08/547,934      10/25/95        10/07/97        03/12/02
5,676,849       08/401,131      03/08/95        10/14/97        03/15/02
5,681,363       08/617,212      03/18/96        10/28/97        03/14/02
5,683,502       08/639,599      04/29/96        11/04/97        03/14/02
5,687,079       08/457,555      06/01/95        11/11/97        03/13/02
5,698,376       08/618,873      03/20/96        12/16/97        03/12/02
5,699,058       08/402,494      03/13/95        12/16/97        03/11/02
5,723,477       08/484,413      06/07/95        03/03/98        03/11/02