(19)

(11)

EP 0 617 820 A1

(12)

(43) Date of publication: 05.10.1994 Bulletin 1994/40 (21) Application number: 93900318.0 (22) Date of filing: 21.12.1992

(51) International Patent Classification (IPC):  G07F 11/ 18( . ) G07F 11/ 44( . ) (86) International application number: PCT/GB1992/002367 (87) International publication number: WO 1993/013501 (08.07.1993 Gazette 1993/16)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 20.12.1991 GB 19910027172 (71) Applicant: Gallaher Limited Weybridge, Surrey, KT13 0QU (GB)	(72) Inventors: WESTROP, Peter R. Oakham, Leicester LE15 8NT (GB) ROSSITER, Norman Manton, Oakham LE15 8SR (GB) (74) Representative: Jackson, Peter Arthur  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)