Game apparatus
United States Patent 2430681
US Patent References:
/0970901.html
- - 0970901

/1247733.html
- - 1247733

Game
- - 1970249

Educational block
- - 1477255


Inventors:
Alvina, Johnson Tekla
Publication Date:
11/11/1947
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Assignee:
Alvina, Johnson Tekla
Primary Class:
473/470
Other Classes:
D21/373
International Classes:
A63B67/06; A63F9/02
Foreign References:
GB155939A