Combined hands and dial for an educational clock

Details Combined hands and dial for an educational clock Combined hands and dial for an educational clock

1997-02-11

2000-02-08

Holtje, Martie K.

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

D10126, 1907

Patent

active

D04203887

REFERENCES:
patent: D111296 (1938-09-01), Barge
patent: D173520 (1954-11-01), Weiss
patent: D247481 (1978-03-01), Bernyk
patent: D253693 (1979-12-01), Guyll
patent: D297512 (1988-09-01), Kowalenko et al.
The Sunday Star, Woodward & Lothrop ad, Nov. 1964.

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