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US Patent: 996,462
Wrench
Improved Wrench for Jewelers and Instrument Makers
Patentee:
David N. Curtis (exact or similar names) - Maple City, KS

USPTO Classifications:
81/129

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John A. Donegan
K. M. Holcomb
Geo. E. Rinehart
Patent Dates:
Applied: Oct. 19, 1909
Granted: Jun. 27, 1911

Patent Pictures:
David N. Curtis patent June 27, 1911
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Description:
The end is a screwdriver; the sliding jaw adjustment is held by hand pressure alone.

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