(19)

(11)

EP 0 442 988 A1

(12)

(43) Date of publication: 28.08.1991 Bulletin 1991/35 (21) Application number: 90912665.0 (22) Date of filing: 31.08.1990

(51) International Patent Classification (IPC):  G06K 17/ 00( . ) G09F 9/ 00( . ) G07G 1/ 14( . ) (86) International application number: PCT/BE1990/000049 (87) International publication number: WO 1991/005316 (18.04.1991 Gazette 1991/09)

(84) Designated Contracting States: BE CH DE DK ES FR GB IT LI NL SE (30) Priority: 01.09.1989 BE 19890000933 (71) Applicant: SYDEC N.V. B-2700 Sint Niklaas (BE)	(72) Inventor: WIJNEN, Erik B-2200 Borgerhout (BE) (74) Representative: Vanderperre, Robert, et al  Bureau Vander Haeghen S.A. Rue Colonel Bourg 108 A B-1040 Bruxelles B-1040 Bruxelles (BE)