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US Patent: 1,422,411
Screw driver
Patentee:
Frank V. Borick (exact or similar names) - New York, NY

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jun. 04, 1920
Granted: Jul. 11, 1922

Patent Pictures:
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