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US Patent: 185,958
Pipe-Wrench
Improvement in Gas-Fitting Wrenches
Patentees:
Charles Peterson - Detroit, MI
Anton Dunnebake - Detroit, MI

USPTO Classifications:
81/175, 81/98

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry Linsel
August Kuenzel
Robert Everett
John F Acker

Patent Dates:
Applied: Oct. 28, 1876
Granted: Jan. 02, 1877

Patent Pictures:
C. Peterson and A. Dunnebake Pat. January 2, 1877
USPTO pdf tiff
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Description:
A casing serves as the attachment point for the pivoting hook jaw, and encloses the nut, adjusting screw, and sliding jaw.

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