Swivel interconnecting toy building blocks

Details Swivel interconnecting toy building blocks Swivel interconnecting toy building blocks

1992-01-27

1993-10-26

Ansher, Bernard

Games, toys, and sports goods

Toy

Representation or scale model

Patent

active

D03407497

REFERENCES:
patent: 3242610 (1966-03-01), Christiansen
patent: 3487579 (1970-01-01), Brettingen
patent: 4606732 (1986-08-01), Lyman
patent: 4744780 (1988-05-01), Volpe
patent: 5172534 (1992-12-01), Milner
Tyco Toy Catalog 1987 p. 24 bottom left of page.

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