Title:
Game for use in connection with a pattern forming cord
United States Patent 2728149
US Patent References:
/0501675.html
- - 0501675
/0630217.html
- - 0630217
Artjopat designing board
- - 2529413
Arithmetic fraction trainer
- - 2611193
/0501675.html
- - 0501675
/0630217.html
- - 0630217
Artjopat designing board
- - 2529413
Arithmetic fraction trainer
- - 2611193
Inventors:
Martin, Radt
Publication Date:
12/27/1955
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Export Citation:
Assignee:
Martin, Radt
Primary Class:
Other Classes:
434/191, 446/118, 428/542.600, 273/157R
International Classes:
A63F9/06; A63F9/08
Foreign References:
| GB189901925A | ||||
| DE354238C |