(19)

(11)

EP 0 140 950 A1

(12)

(43) Date of publication: 15.05.1985 Bulletin 1985/20 (21) Application number: 84901825.0 (22) Date of filing: 13.04.1984

(51) International Patent Classification (IPC):  G09F 7/ 00( . ) (86) International application number: PCT/SE1984/000142 (87) International publication number: WO 1984/004339 (08.11.1984 Gazette 1984/26)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 20.04.1983 SE 19830002236 (71) Applicant: GRÄNGES ALUMINIUM AKTIEBOLAG S-105 45 Stockholm (SE)	(72) Inventor: GARDMAN, Roger Sten Ivar S-612 00 Finspang (SE) (74) Representative: Frankland, Nigel Howard, et al  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München D-80801 München (DE)