(19)

(11)

EP 0 403 602 A1

(12)

(43) Date of publication: 27.12.1990 Bulletin 1990/52 (21) Application number: 89910647.0 (22) Date of filing: 05.09.1989

(51) International Patent Classification (IPC):  H05K 1/ 02( . ) H05K 7/ 14( . ) (86) International application number: PCT/GB1989/001040 (87) International publication number: WO 1990/003101 (22.03.1990 Gazette 1990/07)

(84) Designated Contracting States: BE DE FR IT NL (30) Priority: 08.09.1988 GB 19880021072 (71) Applicant: RACAL-DATACOM LIMITED Hampshire RG27 9PE (GB)	(72) Inventors: GODDARD, Brian, Purdy Berkshire RG14 7EP (GB) PEARCE, David, John Berkshire RG3 3HR (GB) (74) Representative: Abnett, Richard Charles, et al  REDDIE & GROSE 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)