Shape sorter toy

Details Shape sorter toy Shape sorter toy

1985-02-14

1988-06-28

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

D21 59

Patent

active

D02964511

REFERENCES:
patent: D193659 (1962-09-01), Matricardi
patent: D214928 (1969-08-01), Swett et al.
patent: 4008526 (1977-02-01), Swett et al.
patent: 4149717 (1979-04-01), Seijiro
patent: 4273541 (1981-06-01), Ishiyama
Cleo Learning Aids Flier, 2-1976, p. 175, "Form Fitter".

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