Adjustable grip developer
United States Patent 2634976
US Patent References:
/0585799.html
- - 0585799

Dumb-bell
- - 1395313

Apparatus for developing the muscles of the hand
- - 1796216


Inventors:
Mock, John E.
Publication Date:
04/14/1953
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Assignee:
Mock, John E.
Primary Class:
482/48
International Classes:
A63B23/16; A63B23/035
Foreign References:
GB190427934A