(19)

(11)

EP 0 151 148 A1

(12)

(43) Date of publication: 14.08.1985 Bulletin 1985/33 (21) Application number: 84902631.0 (22) Date of filing: 04.06.1984

(51) International Patent Classification (IPC):  H03G 3/ 20( . ) H04W 52/ 00( . ) H04W 52/ 02( . ) (86) International application number: PCT/US1984/000869 (87) International publication number: WO 1985/000082 (03.01.1985 Gazette 1985/01)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 17.06.1983 US 19830505457 (71) Applicant: PRUTEC LIMITED London EC1N 2NH (GB)	(72) Inventor: SIMPSON, Raymond, William Hamilton Square, NJ 08690 (US)