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US Patent: 205,081
Pipe-Wrench
Patentee:
John Hartman, Jr. (exact or similar names) - Philadelphia, PA

USPTO Classifications:
81/116

Tool Categories:
wrenches : alligator wrenches
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Thomas J. Bewley
Herman Koecher
Stephen Ustick
Patent Dates:
Applied: Nov. 22, 1877
Granted: Jun. 18, 1878

Patent Pictures:
John Hartman Jr. patent June 18, 1878
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Description:
The wrench is an adjustable alligator wrench with a slide generating the adjustment.

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