				    Errata
   
   In the list of patents which expired on December 25, 1994, due to failure
to pay maintenance fees, in the O.G. of March 7, 1995, the following
patent should not have appeared:

Patent No.         Serial No.         Issue Date   	 Filing Date

4,979,821          07/388,193          12/25/90             08/01/89  
