Errata In the list of patents which expired on May 20, 1993, due to failure to pay maintenance fees, in the O.G. of August 02, 1994, the following patent should not have appeared: Patent Number Serial Number Issue Date Filing Date Re. 33,293 07/195,854 08/07/90 05/19/88 06/777,028 05/20/86 09/17/85 Errata In the list of patents which expired on July 18, 1992, due to failure to pay maintenance fees, in the O.G. of October 5, 1993, the following patent should not have appeared: Patent Number Serial Number Issue Date Filing Date 4,849,770 06/936,785 07/18/89 12/02/86 Errata In the list of patents which expired on August 29, 1993, due to failure to pay maintenance fees, in the O.G. of November 16, 1993, the following patent should not have appeared: Patent Number Serial Number Issue Date Filing Date 4,537,096 06/584,145 08/27/85 02/27/84 Errata In the list of patents which expired on September 25, 1994, due to failure to pay maintenance fees, in the O.G. of December 06, 1994, the following patent should not have appeared: Patent Number Serial Number Issue Date Filing Date 4,958,988 07/063,755 09/25/90 06/17/87 Errata In the list of patents which expired on December 26, 1993, due to failure to pay maintenance fees, in the O.G. of March 15, 1994, the following patent should not have appeared: Patent Number Serial Number Issue Date Filing Date Re. 34,561 07/816,028 03/15/94 12/30/91 (4,890,573) (07/223,630) (01/02/90) (07/25/88)