Title:
Mathematical game
United States Patent 1402807


Inventors:
Archie, Tegtmeyer
Louis, Schneider
Application Number:
US48205821A
Publication Date:
01/10/1922
Filing Date:
07/02/1921
Assignee:
Archie, Tegtmeyer
Louis, Schneider
Primary Class:
Other Classes:
434/191
International Classes:
G09B19/02
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