(19)

(11)

EP 0 235 209 A1

(12)

(43) Date of publication: 09.09.1987 Bulletin 1987/37 (21) Application number: 86905177.0 (22) Date of filing: 22.08.1986

(51) International Patent Classification (IPC):  G09B 5/ 06( . ) G11B 20/ 00( . ) (86) International application number: PCT/BR1986/000017 (87) International publication number: WO 1987/001492 (12.03.1987 Gazette 1987/06)

(84) Designated Contracting States: DE FR GB (30) Priority: 30.08.1985 BR 19850004209 (71) Applicant: COSTA FILHO, Nelson Martins Campo Grande - 79100 (BR)	(72) Inventor: COSTA FILHO, Nelson Martins Campo Grande - 79100 (BR) (74) Representative: Hill, Cecilia Ann, et al  Abel & Imray Northumberland House 303-306 High Holborn London, WC1V 7LH London, WC1V 7LH (GB)