				    Errata
   
  In the list of patents which expired on March 12, 1995, due to failure
to pay maintenance fees, in the O.G. of May 23, 1995, the following patent
should not have appeared:

Patent No.	   Serial No.		Issue Date	   Filing Date

4,999,528	   07/436,425		03/12/91	   11/14/89
   
