United States Patent and Trademark Office OG Notices: 11 December 2001

                                   Erratum

   In the notice of Certificate of Correction appearing on 1247
O.G. 45, delete all reference to Patent No. 6,181,966, issue of June
12, 2001, 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 on 1251
O.G. 59, delete all reference to Patent No. 6,171,292, issue of October
30, 2001, the number was erroneously mentioned and should be deleted
since no certificate of correction was issued.