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Title:
Putt direction finding method
United States Patent 3293755
Inventors:
Cronwell, Ralph H.
Publication Date:
12/27/1966
Assignee:
Cronwell, Ralph H.
Primary Class:
Other Classes:
33/301, 33/402, 434/252, 473/404, 473/409
International Classes:
A63B57/00
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