Children's educational clock

Details Children's educational clock Children's educational clock

1981-05-07

1983-08-02

Feifer, Melvin B.

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

D1907

Patent

active

D02699770

REFERENCES:
Goldschmiede Zeitung, Nov. 1980, p. 104, bottom, Clock.

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