Title:
Puzzle and puzzle game
United States Patent 2280609
Inventors:
Williamson, Marshall I.
Publication Date:
04/21/1942
Export Citation:
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Assignee:
Williamson, Marshall I.
Primary Class:
273/157A
Other Classes:
273/240, 273/267, 273/275, 273/282.1, 446/99, 446/118
International Classes:
A63F9/10; A63F9/06
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