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US Patent: 1,061,773
Driving mechanism for spiral-tool drivers
Patentee:
John Nahlinger (exact or similar names) - Cleveland, OH

USPTO Classifications:
74/127

Tool Categories:
screwdrivers : screwdriver mechanisms : spiral screwdrivers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
D. C. Reed
John A. Bommhardt

Patent Dates:
Applied: Dec. 18, 1912
Granted: May 13, 1913

Patent Pictures:
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