United States Patent and Trademark Office OG Notices: 17 April 2007


   In the notice of Certificate of Correction appearing in January 16, 2007
Official Gazette, delete the reference, Patent No. 6,994,528 and substitute
therefore the reference, Patent No. 6,991,528. The certificate of
correction for this patent is valid. The certificate of correction was
granted and the patent number should have been included on the certificate
of correction issue list for December 26, 2006.