Errata

   In the list of patents which expired on July 13, 1994, due to failure to
pay maintenance fees, in the O.G. of September 20, 1994, the following
patent should not have appeared:

Patent No.              Serial No.              Issue Date      Filing Date

Re. 32,201              06/638,340              07/08/86        08/06/84
(4,408,200              (06/292,084)            (10/04/83)      (08/12/81)

                                    Errata

   In the list of patents which expired on January 4, 1995, due to failure
to pay maintenance fees, in the O.G. of March 14, 1995, the following
patent should not have appeared:

Patent No.              Serial No.              Issue Date      Filing Date

4,367,086               06/269,037              01/04/83        10/24/80