(19)

(11)

EP 0 172 867 A1

(12)

(43) Date of publication: 05.03.1986 Bulletin 1986/10 (21) Application number: 85901035.0 (22) Date of filing: 28.02.1985

(51) International Patent Classification (IPC):  G06F 1/ 00( . ) G06F 21/ 00( . ) (86) International application number: PCT/GB1985/000077 (87) International publication number: WO 1985/004032 (12.09.1985 Gazette 1985/20)

(84) Designated Contracting States: AT BE CH DE FR LI NL SE (30) Priority: 28.02.1984 GB 19840005097 (71) Applicant: GANDLAKE SOFTWARE LTD. Headley, Berkshire (GB)	(72) Inventor: SHAW, Michael, John Swansea SA5 9EL (GB) (74) Representative: Austin, Hedley William, et al  Urquhart-Dykes & Lord Alexandra House 1 Alexandra Road Swansea West Glamorgan SA1 5ED Swansea West Glamorgan SA1 5ED (GB)