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US Patent: 937,636
Fruit Jar Wrench
Patentee:
William G. Niemann (exact or similar names) - Burlington, IA

USPTO Classifications:
81/3.44

Tool Categories:
wrenches : jar wrenches
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
William G. Niemann - Burlington, IA
Gustave A. Zeiss - Burlington, IA

Manufacturer:
N.Z.O. Wrench Co. - Burlington, IA

Witnesses:
Floyd W. Patch
A. A. Hammond
Gustave A. Zeiss
C. E. Demling
Patent Dates:
Applied: Jul. 14, 1909
Granted: Oct. 19, 1909

Patent Pictures: [ 1 | 2 ]
William G. Niemann Pat. Oct. 19, 1909
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Description:
The gripping surface is comprised of two semi-circular segments. The grip is tightened by an adjustable link to the handle.

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