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 4,928,973 07/097,640 05/29/90 09/16/87 05/25/95 4,958,790 07/349,118 09/25/90 05/05/89 05/25/95 4,981,183 07/215,500 01/01/91 07/06/88 05/26/95 4,983,328 07/170,611 01/08/91 03/15/88 05/25/95 4,990,057 07/346,749 02/05/91 05/03/89 05/25/95 4,626,943 06/627,651 12/02/86 07/03/84 05/26/95 4,647,257 06/704,500 03/03/87 02/22/85 05/15/95