(19)

(11)

EP 0 219 496 A1

(12)

(43) Date of publication: 29.04.1987 Bulletin 1987/18 (21) Application number: 85902358.0 (22) Date of filing: 29.04.1985

(51) International Patent Classification (IPC):  A62D 3/ 32( . ) C07C 7/ 148( . ) A62D 3/ 36( . ) A62D 101/ 22( . ) (86) International application number: PCT/US1985/000755 (87) International publication number: WO 1986/006297 (06.11.1986 Gazette 1986/24)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicants: LAYMAN, Robert, G. Barto, PA 19504 (US) KEMP, Linwood B. Birdsboro, PA 19508 (US)	(72) Inventors: LAYMAN, Robert, G. Barto, PA 19504 (US) KEMP, Linwood B. Birdsboro, PA 19508 (US) (74) Representative: Oliver, Roy Edward, et al  W.P. THOMPSON & CO. Celcon House 289-293 High Holborn London WC1V 7HU London WC1V 7HU (GB)