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US Patent: 928,150
Pipe Wrench
Patentee:
Edward M. Peterson (exact or similar names) - Forest City, IA

USPTO Classifications:
81/129, 81/179

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. C. Dahlberg
A. G. Hague
A. L. Moen
M. Rollefson
Patent Dates:
Applied: Oct. 29, 1908
Granted: Jul. 13, 1909

Patent Pictures:
Edward M. Peterson patent July 13, 1909
USPTO (New site tip)
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Description:
The sliding jaw piece on the main shank enables grip and release action of the toothed gripping surface set at an angle.

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