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US Patent: 580,905
Wrench
Patentee:
Charles H. Shank (exact or similar names) - Noblesville, IN

USPTO Classifications:
279/35, 81/115

Tool Categories:
wrenches : brace wrenches
wrenches : socket wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
K. A. Nau
H. F. Hills
J. C. Jones
W. H. Wainwright
Patent Dates:
Applied: May 06, 1896
Granted: Apr. 20, 1897

Patent Pictures:
Charles H. Shank patent April 20, 1897
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Description:
Adjustable socket wrench for brace; the jaws open by an internal spring, and adjust to size by a rotating collar with internal cams.

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