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US Patent: 396,857
Wrench
Patentee:
Larns Frus Carstensen (exact or similar names) - Bridgeport, CT

USPTO Classifications:
81/134, 81/156, 81/97

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

Assignees:
Armstrong Manufacturing Co. - Bridgeport, CT

Manufacturer:
Not known to have been produced

Witnesses:
C. M. Newman
Bertha E. Lee
A. M. Wooster
Patent Dates:
Applied: Jun. 11, 1888
Granted: Jan. 29, 1889

Patent Pictures:
Larns Frus Carstensen patent January 29, 1889
USPTO (New site tip)
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Description:
The focus of the patent is the combination quick and screw adjustment.

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