(19)

(11)

EP 0 193 537 A1

(12)

(43) Date of publication: 10.09.1986 Bulletin 1986/37 (21) Application number: 85903111.0 (22) Date of filing: 04.06.1985

(51) International Patent Classification (IPC):  E05B 45/ 06( . ) E05B 49/ 02( . ) H04Q 1/ 39( . ) E05B 49/ 00( . ) G07C 9/ 00( . ) (86) International application number: PCT/US1985/001024 (87) International publication number: WO 1986/001360 (27.02.1986 Gazette 1986/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 17.08.1984 US 19840641792 31.05.1985 US 19850740040 (71) Applicant: COMPUTERIZED SECURITY SYSTEMS INCORPORATED Troy, MI 48084 (US)	(72) Inventor: FRASER, Stephen, George Troy, MI 48098 (US) (74) Representative: Wharton, Peter Robert, et al  Urquhart-Dykes & Lord Inventions House Valley Court, Canal Road Bradford BD1 4SP Bradford BD1 4SP (GB)