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US Patent: 678,960
Pipe Wrench
Patentees:
Joseph P. Lavigne (exact or similar names) - New Haven, CT
Albert W. Johnson (exact or similar names) - New Haven, CT

USPTO Classifications:
81/110

Tool Categories:
wrenches : pipe wrenches

Assignees:
Yale Motor Co. - New Haven, CT

Manufacturer:
Not known to have been produced

Witnesses:
Adrian C, Heitmann, Jr.
A. McC. Mathewson
Charles B. Shumway
Louis T. Bulley
Patent Dates:
Applied: Jan. 19, 1901
Granted: Jul. 23, 1901

Patent Pictures:
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Description:
A. W. Johnson - patent attorney

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