Toy calculator

Details Toy calculator Toy calculator

1985-01-23

1987-10-06

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

D18 7

Patent

active

D02922223

REFERENCES:
patent: D256028 (1980-07-01), Lawrence et al.
patent: D280217 (1985-08-01), Tomozawa et al.
patent: D281606 (1985-12-01), Nuttall et al.
Education Station Catalog, 11-1983, p. 5, Item D, Q & A Set.

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