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US Patent: 130,671
Improvement in Bedstead-Keys
Patentee:
Hermann Stein (exact or similar names) - New York, NY

USPTO Classifications:
403/152, 81/121.1

Tool Categories:
wrenches : socket wrenches
wrenches : wrench components : wrench handle components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Geo. W. Mabee
T. B. Mosher
Chas. Nida
Patent Dates:
Granted: Aug. 20, 1872

Patent Pictures:
Hermann Stein Pat. August. 20, 1872
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Description:
The tool is a socket wrench with a "ball-and-pin" joint between the handle and head which acts as a kind of universal joint.

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