(19)

(11)

EP 0 774 143 A1

(12)

(43) Date of publication: 21.05.1997 Bulletin 1997/21 (21) Application number: 95919521.0 (22) Date of filing: 19.05.1995

(51) International Patent Classification (IPC):  G06K 19/ 02( . ) (86) International application number: PCT/GB1995/001148 (87) International publication number: WO 1996/004610 (15.02.1996 Gazette 1996/08)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 01.08.1994 GB 19940015472 (71) Applicant: SHERBROOKE SECURITIES LIMITED Colwyn Bay Clwyd LL29 8NB (GB)	(72) Inventor: ROBERTS, William, Sherbrooke Clwyd LL29 8NB (GB) (74) Representative: Tunstall, Christopher Stephen  Dibb Lupton Alsop, 117 The Headrow Leeds, West Yorkshire LS1 5JX Leeds, West Yorkshire LS1 5JX (GB)