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US Patent: 356,986
Pipe Wrench
Patentee:
John Clark (exact or similar names) - Greenpoint, NY

USPTO Classifications:
81/98

Tool Categories:
wrenches : pipe wrenches

Assignees:
John Clark - Greenpoint, NY
Michael Gilmartin - Greenpoint, NY

Manufacturer:
Not known to have been produced

Witnesses:
William Miller
Otto Hufeland
W. Hauff
E. F. Kastenhuber
Patent Dates:
Applied: Nov. 04, 1886
Granted: Feb. 01, 1887

Patent Pictures:
John Clark patent February 1, 1887
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Description:
The position of the swinging hook jaw is set by a tapered key.

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