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US Patent: 613,213
Wrench
Patentee:
William F. Murphy (exact or similar names) - Boston, MA

USPTO Classifications:
81/144

Tool Categories:
wrenches : wrench adjustment types

Assignees:
William F. Murphy - Boston, MA
Thomas H. Doherty - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
Walter E. Lombard
Edward F. Allen
John C. Edwards
Geo. H. Maxwell
Patent Dates:
Applied: Jan. 12, 1898
Granted: Oct. 25, 1898

Patent Pictures:
William F. Murphy patent October 28, 1898
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Description:
Turning the handle engages or releases the toothed clamping block that sets the adjustment of the movable jaw.

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