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

4,491,265        06/501,605        01/01/85        06/06/83        03/13/95
4,494,739        06/472,401        01/22/85        03/04/83        03/20/95
4,507,045        06/374,831        03/26/85        05/05/82        03/16/95
4,529,182        06/483,790        07/16/85        04/11/83        03/20/95
4,532,835        06/607,540        08/06/85        05/07/84        03/15/95
4,537,085        06/460,109        08/27/85        01/24/83        03/20/95
4,559,649        06/497,686        12/24/85        05/24/83        03/15/95
4,567,622        06/590,264        02/04/86        03/16/84        03/20/95
4,570,951        06/655,984        02/18/86        09/27/84        03/20/95
4,575,918        06/626,225        03/18/86        06/29/84        02/28/95
4,608,299        06/824,859        08/26/86        01/31/86        03/22/95
4,614,004        06/667,235        09/30/86        11/01/84        03/22/95
4,630,608        06/743,940        12/23/86        06/12/85        03/16/95
4,630,689        06/708,207        12/23/86        03/04/85        03/15/95
4,782,551        07/070,121        11/08/88        07/06/87        01/18/95
4,800,361        07/073,064        01/24/89        07/13/87        03/20/95
4,804,470        06/916,601        02/14/89        10/08/86        03/13/95
4,852,521        07/034,925        08/01/89        04/06/87        02/17/95
4,856,862        07/185,103        08/15/89        04/22/88        03/13/95
4,885,729        07/228,532        12/05/89        08/04/88        03/16/95
4,928,558        07/284,737        05/29/90        12/15/88        03/15/95
4,949,538        07/276,594        08/21/90        11/28/88        03/15/95
4,949,808        07/396,858        08/21/90        08/22/89        03/16/95