Vertical puzzle

Details Vertical puzzle Vertical puzzle

1993-10-05

1994-12-13

Ansher, Bernard

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D03534162

REFERENCES:
patent: 2491296 (1946-05-01), Beder
patent: 2493697 (1950-01-01), Raczkowski
patent: 3302311 (1967-02-01), Israel
patent: 3565443 (1971-02-01), Klein
patent: 4373729 (1983-02-01), Hanson et al.
patent: 4418915 (1983-12-01), Calebs
patent: 4815742 (1989-03-01), Augustine
patent: 4830376 (1989-05-01), Willis
patent: 4934701 (1990-06-01), Ting
patent: 5145177 (1992-09-01), Wells

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