Title:
Ball propellers
United States Patent 3080859
US Patent References:
Curved ball projecting device
- - 2975779

Toy rocket
- - 2993297

/0243572.html
- - 0243572


Inventors:
Erwin, Benkoe
Publication Date:
03/12/1963
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Assignee:
TRANSOGRAM COMPANY INC
Primary Class:
124/64
Other Classes:
473/418
International Classes:
A63B69/40