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US Patent: 17,229
Wrench
Patentee:
Charles Pinder - Lowell, MA

USPTO Classifications:
81/154

Tool Categories:
wrenches : wrench adjustment types : wedge adjust wrenches
wrenches : nut wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles A. Stott
E. W. Scott

Patent Dates:
Granted: May 05, 1857

Patent Pictures:
Charles Pinder Pat. May 5, 1857
USPTO pdf tiff
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Description:
The adjustment is held by a sliding wedge key contained within the adjustable jaw.

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