(19)

(11)

EP 0 027 126 A1

(12)

(43) Date of publication: 22.04.1981 Bulletin 1981/16 (21) Application number: 80900805.0 (22) Date of filing: 17.03.1980

(51) International Patent Classification (IPC):  G03B 1/ 04( . ) G11B 15/ 32( . ) (86) International application number: PCT/US1980/000290 (87) International publication number: WO 1980/002330 (30.10.1980 Gazette 1980/25)

(84) Designated Contracting States: GB (30) Priority: 16.04.1979 US 19790030230 (71) Applicant: YOUNG, Timothy Tung Jen San Carlos, CA 94070 (US)	(72) Inventor: YOUNG, Timothy Tung Jen San Carlos, CA 94070 (US)