Shape sorting toy

Details Shape sorting toy Shape sorting toy

1989-05-19

1991-08-13

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D03190820

REFERENCES:
patent: D214928 (1969-08-01), Swett et al.
patent: D222999 (1972-02-01), Tachi
patent: 2911740 (1959-11-01), Miller
patent: 4149717 (1979-04-01), Seijiro

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