Toy calculator

Details Toy calculator Toy calculator

1984-02-02

1986-05-27

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

D18 7

Patent

active

D02840170

REFERENCES:
patent: D227770 (1973-07-01), Yamamoto
patent: D228501 (1973-10-01), Yamamoto
patent: D232836 (1974-09-01), Kitai
patent: D235452 (1975-06-01), Ikeda
patent: 4075771 (1978-02-01), Landsinger et al.

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