Folded blank structure for interlocking toy construction elements
United States Patent 2874512
US Patent References:
Educational building construction set
- - 1562006

Toy building block
- - 1604391

Miniature structure and blank therefor
- - 2141399

Toy block
- - 2278327


Inventors:
Joseph, John L.
Irving, Dorfman
Publication Date:
02/24/1959
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Assignee:
BRRR PRODUCTS CO INC
Primary Class:
446/106
Other Classes:
446/487
International Classes:
A63H33/08; A63H33/16; A63H33/00; A63H33/04