(19)

(11)

EP 0 198 830 A1

(12)

(43) Date of publication: 29.10.1986 Bulletin 1986/44 (21) Application number: 85900120.0 (22) Date of filing: 20.12.1984

(51) International Patent Classification (IPC):  G09B 5/ 04( . ) G11B 19/ 02( . ) G11B 27/ 10( . ) G11B 27/ 30( . ) G11B 15/ 02( . ) G11B 27/ 00( . ) G11B 27/ 22( . ) (86) International application number: PCT/FI1984/000099 (87) International publication number: WO 1985/002934 (04.07.1985 Gazette 1985/15)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 20.12.1983 FI 19830004689 (71) Applicant: SUOMEN INVENTOR OY SF-15230 Lahti (FI)	(72) Inventor: KAIVOLA, Ilkka SF-15230 Lahti (FI)