Title:
GRAVITY BOWLING BALL PROJECTOR
United States Patent 3539183

Inventors:
Lieb, Aaron Calvin
Publication Date:
11/10/1970
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Assignee:
Aaron, Calvin Lieb
Primary Class:
473/56
Other Classes:
273/129R
International Classes:
A63B71/00; A63D5/00; A63D3/02




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