Manipulable puzzle

Details Manipulable puzzle Manipulable puzzle

1987-09-14

1989-01-24

Rademaker, Charles A.

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D02994992

REFERENCES:
patent: D181913 (1958-01-01), Southwick
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patent: 2824740 (1958-02-01), Cowan
patent: 3317210 (1967-05-01), DiMeo
patent: 3492756 (1970-02-01), Stubbmann
patent: 3655194 (1972-04-01), Pierson
patent: 4415150 (1983-11-01), Engel
patent: 4468033 (1984-08-01), Minami et al.
patent: 4550040 (1983-03-01), Fisher
patent: 4580783 (1986-04-01), Cohan et al.

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