United States Patent and Trademark Office OG Notices: 23 July 2002

                                   Erratum

   In the notice of Certificate of Correction appearing in June
25, 2002 O.G., Vol. 1259 O.G. 139, delete all reference to Patent No.
6,152,555, issue of June 4, 2002, the number was erroneously mentioned
and should be deleted since no certificate of correction was issued.



                                   Erratum

   In the notice of Certificate of Correction appearing in June
25, 2002 O.G., Vol. 1259 O.G. 139, delete all reference to Patent No.
6,177,452, issue of June 4, 2002, the number was erroneously mentioned
and should be deleted since no certificate of correction was issued.



                                   Erratum

   In the notice of Certificate of Correction appearing in June
25, 2002 O.G., Vol. 1259 O.G. 139, delete all reference to Patent No.
6,235,279, issue of June 4, 2002, the number was erroneously mentioned
and should be deleted since no certificate of correction was issued.



                                   Erratum

   In the notice of Certificate of Correction appearing in June
25, 2002 O.G., Vol. 1259 O.G. 139, delete all reference to Patent No.
6,228,810, issue of June 4, 2002, the number was erroneously mentioned
and should be deleted since no certificate of correction was issued.



                                   Erratum

   In the notice of Certificate of Correction appearing in June
25, 2002 O.G., Vol. 1259 O.G. 140, delete all reference to Patent No.
6,311,024, issue of June 4, 2002, the number was erroneously mentioned
and should be deleted since no certificate of correction was issued.



                                   Erratum

   In the notice of Certificate of Correction appearing in June
25, 2002 O.G., Vol. 1259 O.G. 139, delete all reference to Patent No.
6,088,522, issue of June 4, 2002, the number was erroneously mentioned
and should be deleted since no certificate of correction was issued.