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US Patent: 503,215
Pipe Wrench
Patentees:
Thomas H. Oxnam (exact or similar names) - De Lamar, ID
James Joyce (exact or similar names) - De Lamar, ID
Joseph Francis (exact or similar names) - De Lamar, ID

USPTO Classifications:
81/108, 81/186

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. Stansbury
Harry B. Rohrer
S. V. Reynolds
Thos R. Faull

Patent Dates:
Applied: Apr. 14, 1893
Granted: Aug. 15, 1893

Patent Pictures:
Thomas H. Oxnam, James Joyce, and Joseph Francis patent August 15, 1893.
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Description:
A hook jaw pipe wrench; the "finger lever" helps hold the hook jaw against the work piece, and the center shaft screws in or out to adjust for different pipe sizes.

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