United States Patent and Trademark Office OG Notices: 22 May 2007

                                   Erratum


   In the notice of Certificate of Correction appearing in December 12,
2006 Official Gazette, insert the reference, Patent No. 6,866,180. The
certificate of correction for this patent is valid. The certificate of
correction was granted and should have been included on the certificate of
correction list for November 21, 2006.


                                   Erratum


   In the notice of Certificate of Correction appearing in April 19, 2005
Official Gazette, insert the reference, Patent No. 6,817,716. The
certificate of correction for this patent is valid. The certificate of
correction was granted and should have been included on the certificate of
correction list for March 29, 2005.