Game apparatus for teaching the use of the multiplication table
United States Patent 2585458
US Patent References:
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Inventors:
Gordon I, Julia E.
Publication Date:
02/12/1952
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Assignee:
Gordon I, Julia E.
Primary Class:
273/126R
Other Classes:
473/588, 434/209, 473/589
International Classes:
G09B19/02
US Patent References:
1470872Educational game appliance
1719108Game for teaching multiplication
1935308Game counter
2073551Counting device
2410845Token
2472439Device for teaching arithmetic