(19)

(11)

EP 0 159 331 A1

(12)

(43) Date of publication: 30.10.1985 Bulletin 1985/44 (21) Application number: 84903558.0 (22) Date of filing: 27.09.1984

(51) International Patent Classification (IPC):  H05K 3/ 34( . ) H05K 13/ 04( . ) H05K 3/ 12( . ) H05K 3/ 30( . ) H05K 1/ 03( . ) (86) International application number: PCT/GB1984/000330 (87) International publication number: WO 1985/001634 (11.04.1985 Gazette 1985/09)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 27.09.1983 GB 19830025803 (71) Applicant: DORTRELL LIMITED Hampshire (GB)	(72) Inventor: BURKE, John, Patrick Berkshire (GB) (74) Representative: Brooks, Nigel Samuel  Hill Hampton East Meon Petersfield Hampshire GU32 1QN Petersfield Hampshire GU32 1QN (GB)