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US Patent: 50,021
Improvement in Screw-Drivers
Patentee:
James S. McCurdy (exact or similar names) - Bridgeport, CT

USPTO Classifications:
81/440

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Bruen Mfg Co. - New York, NY

Witnesses:
George B. Sharp
S. R. Leggett
Patent Dates:
Granted: Sep. 19, 1865

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
An example of this patent appeared in one of Martin Donnelly's auctions.

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