Errata

   In the list of patents which expired on December 15, 1995, due to
failure to pay maintenance fees, in the O.G. of February 20, 1996, the
following patent should not have appeared:

Patent Number      Serial Number     Filing Date         Issue Date

4,712,709          06/856,172        04/28/86              12/15/87

                                    Errata

   In the list of patents which expired on May 18, 1995 due to failure to
pay maintenance fees, in the O.G. of August 01, 1995, the following
patent should not have appeared:

Patent Number      Serial Number     Filing Date         Issue Date

4,665,955          06/825,575        02/04/86              05/19/87