Toy building block

Details Toy building block Toy building block

1979-12-13

1981-06-23

Shay, F. Barry

A63H 3306

Patent

active

042742218

ABSTRACT:
Each block of a set of toy building blocks is in the shape of a cube with two in-formed recesses, one at one corner of the cube and the other in the diagonally opposed corner. The dimensions of both recesses are equal and cubic, and equivalent to half the length of one of the sides of the cube.

REFERENCES:
patent: D206336 (1966-11-01), Wilson
patent: 2100658 (1937-11-01), Finch
patent: 2939243 (1960-06-01), Duggar
patent: 3065970 (1962-11-01), Besley
patent: 3672110 (1972-06-01), Nordstrom
patent: 3672681 (1972-06-01), Wolf
patent: 3813841 (1974-06-01), Tsurumi
patent: 3854237 (1974-12-01), Loth
patent: 4197669 (1977-08-01), Hynes

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