United States Patent and Trademark Office OG Notices: 04 June 2002

                                    Erratum

   In the notice of Certificate of Correction appearing in
February 5, 2002 O.G., Vol. 1255 O.G. 828, delete all reference to
Patent No. 6,236,632, issue of January 15, 2002, the number was
erroneously mentioned and should be deleted since no certificate of
correction was issued.


                                    Erratum

   This is a notice to vacate the Certificate of Correction issued
to 6,151,943 on 25 September 2001 and published in the Official
Gazette, Vol. 1250, No. 4. The Certificate of Correction issued on 8
May 2001 and published in the Official Gazette, Vol. 1246, No. 2 is
reinstated.