Electronic educational game housing

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

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D21 13

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D03698319

REFERENCES:
patent: D318306 (1991-07-01), Cheung
patent: D338045 (1993-08-01), Rosen
patent: D345377 (1994-03-01), Poon
patent: D350373 (1994-09-01), Chow et al.
1984 catalog, Video Technology (U.S.) Inc.
1987 catalog, Video Technology Industries, Inc., p. 3.
1990 catalog, Video Technology Industries, Inc., p. 25.
1991 catalog, Video Technology Industries, Inc., pp. 36, 37.
1992 catalog, Video Technology Industries, Inc., p. 21.
1993 catalog, Video Technology Industries, Inc., p. 31.

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