Educational and/or therapeutic game set or similar article

Details Educational and/or therapeutic game set or similar article Educational and/or therapeutic game set or similar article

1976-11-24

1979-06-12

Feifer, Melvin B.

Office supplies; artists and teachers materials

Teaching material

D21105, D 6216, D 6258, D 6264, D25 89, D1907

Patent

active

D02520931

REFERENCES:
patent: D95957 (1935-06-01), Hooven, Jr.
patent: D181424 (1957-11-01), Murray
Computers and People, Aug., 1976, p. 27, middle right item.

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