United States Patent and Trademark Office OG Notices: 10 September 2002

                                    Erratum

   Reference to Patent No. 6,306,482 appearing in the Certificate
of Correction listing in the Official Gazette of April 30, 2002, should
be deleted since the patent number was erroneously mentioned.

                                    Erratum

    Reference to Patent No. 6,344,107 appearing in the Certificate
of Correction listing in the Official Gazette of May 7, 2002, should be
deleted since the patent number was erroneously mentioned.


                                    Erratum

   Reference to Patent No. 5,207,223 appearing in the Certificate
of Correction listing in the Official Gazette of April 23, 2002 should
be deleted since the patent number was erroneously mentioned.


                                    Erratum

   Reference to Patent No. 6,225,021 appearing in the Certificate
of Correction listing in the Official Gazette of December 4, 2001
should be deleted since the patent number was erroneously mentioned.