(19)

(11)

EP 0 178 309 A1

(12)

(43) Date of publication: 23.04.1986 Bulletin 1986/17 (21) Application number: 85901512.0 (22) Date of filing: 01.04.1985

(51) International Patent Classification (IPC):  G06F 9/ 46( . ) G06F 15/ 177( . ) (86) International application number: PCT/GB1985/000138 (87) International publication number: WO 1985/004499 (10.10.1985 Gazette 1985/22)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 02.04.1984 GB 19840008444 (71) Applicant: HEMDAL, Göran Anders Henrik Ashford, Middlesex, TW15 2JN (GB)	(72) Inventor: HEMDAL, Göran Anders Henrik Ashford, Middlesex, TW15 2JN (GB) (74) Representative: Bayliss, Geoffrey Cyril, et al  BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)