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US Patent: 156,365
Wrenches
Patentee:
Benjamin G. Martin (exact or similar names) - New York, NY

USPTO Classifications:
232/4R, 81/133

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. Hauff
E. F. Kastenhuber
Ernst Billhuber
Henry Gentnen
Patent Dates:
Applied: Apr. 06, 1874
Granted: Oct. 27, 1874

Patent Pictures:
Benjamin G. Martin Pat. Oct. 27, 1874
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Description:
The adjustment of the movable jaw is held by an unusual lever and cam-ring device.

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