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US Patent: 50,021
Improvement in Screw-Drivers
Patentee:
James S. McCurdy - Bridgeport, CT

USPTO Classifications:
81/440

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George B. Sharp
S. R. Leggett

Patent Dates:
Granted: Sep. 19, 1865

Patent Pictures:
USPTO pdf tiff
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