Bowling pin raising and lowering mechanism
United States Patent 2530385

Inventors:
Frye, Sanders A.
Publication Date:
11/21/1950
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Assignee:
AMERICAN MACH & FOUNDRY
Primary Class:
473/92
International Classes:
A63D5/08; A63D5/00
US Patent References:
2353189Respotter mechanism
2388708Pin setting mechanism for bowling alleys