United States Patent and Trademark Office OG Notices: 26 March 2002

                                   Erratum


   In the notice of Certificate of Correction appearing in
February 26, 2002 O.G., Vol. 1255 O.G. 909, delete all reference to
Patent No. 6,233,726, issue of February 5, 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
February 26, 2002 O.G., Vol. 1255 O.G. 909, delete all reference to
Patent No. 6,148,344, issue of February 5, 2002, the number was
erroneously mentioned and should be deleted since no certificate of
correction was issued.