Electronic educational game for the teaching of children

Office supplies; artists and teachers materials – Teaching material – Sensory feedback – e.g. – audio-visual teaching machine

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D21 13, D14106

Patent

active

D03492982

REFERENCES:
patent: D312451 (1990-11-01), Katoh et al.
patent: D313979 (1991-01-01), Miyakuni
patent: D317176 (1991-05-01), Cheung
1988 catalog, Video Technology Industries, Inc., p. 14.
1991 catalog, Video Technology Industries, Inc., p. 10.
1991 catalog, Video Technology Electronics, Ltd., p. 14.

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