Case for an electronic learning aid, game or similar apparatus

Details Case for an electronic learning aid, game or similar apparatus Case for an electronic learning aid, game or similar apparatus

1978-05-01

1980-07-22

Feifer, Melvin B.

Office supplies; artists and teachers materials

Teaching material

Sensory feedback, e.g., audio-visual teaching machine

D18 7, D1907

Patent

active

D02560283

REFERENCES:
patent: D229065 (1973-11-01), Maeda et al.
patent: D232943 (1974-09-01), Maeda
patent: D245370 (1977-08-01), Maeda

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