(19)

(11)

EP 0 374 155 A1

(12)

(43) Date of publication: 27.06.1990 Bulletin 1990/26 (21) Application number: 88905411.0 (22) Date of filing: 09.06.1988

(51) International Patent Classification (IPC):  G11B 5/ 73( . ) (86) International application number: PCT/HU1988/000040 (87) International publication number: WO 1989/012295 (14.12.1989 Gazette 1989/29)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: RADIUS HUNGARICUS RT H-9700 Szombathely (HU)	(72) Inventor: TOTH, Laszlo H-1092 Budapest (HU) (74) Representative: Gold, Tibor Z.  Stephenson Harwood One, St. Paul's Churchyard London EC4M 8SH London EC4M 8SH (GB)