United States Patent and Trademark Office OG Notices: 02 May 2006

                                   Erratum


   In the notice of "PATENTS WHICH EXPIRED ON September 18, 2005 DUE TO
FAILURE TO PAY MAINTENANCE FEES" appearing in the Official Gazette of
November 15, 2005, reference to Patent No. 6,291,794 which issued from
Application No. 09/421,428 should have been included since the relevant
maintenance fee and applicable surcharge were not timely paid in that
patent.


                                  Erratum


   In the notice of "PATENTS WHICH EXPIRED ON September 18, 2005 DUE TO
FAILURE TO PAY MAINTENANCE FEES" appearing in the Official Gazette of
November 15, 2005, reference to Patent No. 6,292,584 which issued from
Application No. 09/057,107 should have been included since the relevant
maintenance fee and applicable surcharge were not timely paid in that
patent.


                                  Erratum


   In the notice of "PATENTS WHICH EXPIRED ON January 1, 2006 DUE TO
FAILURE TO PAY MAINTENANCE FEES" appearing in the Official Gazette of
February 28, 2006, all reference to Patent No. 6,334,713 which issued from
Application No. 09/312,502 should be deleted since the relevant maintenance
fee and applicable surcharge were timely paid in that patent.