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US Patent: 1,412,702
Wrench
Patentee:
Benjamin Franklin Nightlinger, Sr. (exact or similar names) - Duluth, MN

USPTO Classifications:
81/98

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George C. Myers
W. S. Brock
Patent Dates:
Applied: Feb. 28, 1922
Granted: Apr. 11, 1922

Patent Pictures:
Benjamin F. Nightlinger, Sr. patent April 11, 1922
USPTO (New site tip)
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Description:
The unique feature of the patent is the shape of the hook jaw

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