Dual nature puzzle pieces

Details Dual nature puzzle pieces Dual nature puzzle pieces

1977-05-31

1978-09-12

Oechsle, Anton O.

Amusement devices: games

Puzzles

Take-aparts and put-togethers

35 72, A63F 912

Patent

active

041132564

ABSTRACT:
Two three-dimensional shapes are described. The shapes may be used together both for the working of space-relational puzzles and for the working of many and various tile-like designs.

REFERENCES:
patent: 3885794 (1975-05-01), Coffin

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