United States Patent and Trademark Office OG Notices: 06 April 2004

                                    Erratum

   In the notice of Certificate of Correction appearing in March
2, 2004, delete all reference to Patent No. 6,511,893, issue of
February 10, 2004. No certificate of correction was issued for this
patent.

                                    Erratum

   In the notice of Certificate of Correction appearing in April
16, 2002, delete all reference to Patent No. 6,090,985, issue of March
26, 2002. No certificate of correction was issued for this patent.

                                    Erratum

   In the notice of Certificate of Correction appearing in October
7, 2003, delete all reference to Patent No. 6,488,401, issue of
September 16, 2003. No certificate of correction was issued for this
patent.

                                    Erratum

   In the notice of Certificate of Correction appearing in October
21, 2003, delete all reference to Patent No. 6,425,339, issue of
September 30, 2003. No certificate of correction was issued for this
patent.

                                    Erratum

   In the notice of Certificate of Correction appearing in October
14, 2003, delete all reference to Patent No. 6,575,964, issue of
September 23, 2003. No certificate of correction was issued for this
patent.

                                    Erratum

   In the notice of Certificate of Correction appearing in
September 2, 2003, delete all reference to Patent No. 6,505,361, issue
of August 12, 2003. No certificate of correction was issued for this
patent.

                                    Erratum

   In the notice of Certificate of Correction appearing in October
21, 2003, delete all reference to Patent No. 6,508,739, issue of
September 30, 2003. No certificate of correction was issued for this
patent.