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US Patent: 532,192
Wrench for Pipes, &c.
John C. Booth - Brooklyn, NY

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches

J. H. Williams & Co. - Brooklyn, NY

Not known to have been produced

Harold Serrell
William G. Mott
Charles H. Smith
J. Staib

Patent Dates:
Applied: Oct. 17, 1894
Granted: Jan. 08, 1895

Patent Pictures:
John C. Booth patent January 8, 1895
USPTO pdf tiff
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The "fixed" end of the chain travels in a groove or grooves in the jaw piece. The "hook" to catch the chain is of the sort described in patent nos. 377,795 or 499,508.

The "single jaw" version marks the beginning of evolution in what became the AGRIPPA pipe and fittings wrench.

Lemuel W. Terrell - patent attorney

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