NOTIFICATION OF ACCEPTANCE OF DELAYED PAYMENT OF MAINTENANCE FEE
                        (35 U.S.C. 41(c); 37 CFR 1.378)

   The patent(s) listed below are considered as not having expired but are
subject to the conditions set forth in 35 U.S.C. 41(c)(2), in view of the
Petition to Accept Late Payment of the maintenance fees which has been GRANTED
BY THE COMMISSIONER OF PATENTS AND TRADEMARKS, as provided for under 35 U.S.C.
41(c)(1) and 37 CFR 1.378.

                                                Application     Delayed Payment
Patent No.       Serial No.     Patent Date     Filing Date     Acceptance Date

4,382,638        06/269,621        05/10/83        06/02/81        04/19/95
4,566,294        06/576,214        01/28/86        02/02/84        01/30/95
4,654,509        06/784,739        03/31/87        10/07/85        02/18/94
4,844,965        07/148,023        07/04/89        01/25/88        01/03/95
4,482,990        06/551,597        11/13/84        11/14/83        05/23/95
4,496,006        06/491,531        01/29/85        05/04/83        03/30/95
4,505,626        06/454,723        03/19/85        02/24/83        05/23/95
4,554,574        06/735,708        11/19/85        05/17/85        05/23/95
4,603,045        06/706,001        07/29/86        02/27/85        05/23/95
4,627,382        06/646,783        12/09/86        09/04/84        05/23/95
4,630,421        06/803,134        12/23/86        11/29/85        05/23/95
4,806,525        07/065,043        02/21/89        06/18/87        05/24/95
4,920,901        07/224,713        05/01/90        07/27/88        05/23/95
4,985,953        07/482,515        01/22/91        02/21/90        05/23/95
4,986,611        07/483,214        01/22/91        02/20/90        05/23/95
4,986,782        07/440,721        01/22/91        11/24/89        05/25/95
4,986,052        07/432,487        01/22/91        11/07/89        05/24/95
4,992,846        07/549,547        02/12/91        07/09/90        05/24/95