(19)

(11)

EP 0 198 819 A1

(12)

(43) Date of publication: 29.10.1986 Bulletin 1986/44 (21) Application number: 84900408.0 (22) Date of filing: 27.12.1983

(51) International Patent Classification (IPC):  G06K 9/ 00( . ) G07D 7/ 20( . ) G07D 7/ 12( . ) (86) International application number: PCT/SE1983/000477 (87) International publication number: WO 1985/002928 (04.07.1985 Gazette 1985/15)

(84) Designated Contracting States: AT BE CH FR LI LU NL (71) Applicant: BERGSTRÖM, Arne S-131 46 Nacka (SE)	(72) Inventor: BERGSTRÖM, Arne S-131 46 Nacka (SE) (74) Representative: Quest, Barry, et al  M'CAW & CO. 41-51 Royal Exchange Cross Street Manchester M2 7BD Manchester M2 7BD (GB)