ELECTRONIC TEACHING AID - Patent 0032943

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EP 0 032 943 A1

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(43)	Date of publication:
	05.08.1981 Bulletin 1981/31

(21)	Application number: 80901603.0

(22)	Date of filing: 21.07.1980

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International Patent Classification (IPC):

G09B 5/ 06^{( . )}
G10L 13/ 04^{( . )}

G09B 19/ 04^{( . )}

(86)	International application number:
	PCT/US1980/000931

(87)	International publication number:
	WO 1981/000477 (19.02.1981 Gazette 1981/05)

(84)	Designated Contracting States:
	DE FR GB

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Priority:

31.07.1979 US 19790062286

(71)	Applicants:
	ANDERSON, Weston A. Palo Alto, CA 94306 (US) FISHER, Gerald M. Palo Alto, CA 94301 (US)

(72)	Inventors:
	ANDERSON, Weston A. Palo Alto, CA 94306 (US) FISHER, Gerald M. Palo Alto, CA 94301 (US)

(74)	Representative: Cline, Roger Ledlie, et al
	STANLEY, POPPLEWELL, POOLE 57 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)

(54)	ELECTRONIC TEACHING AID