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Patent number:
Patent Date:
US Patent: 267,709
Screw Driver
Patentee:
Phillip Nadig (
exact
or
similar
names) - Allentown, PA
USPTO Classifications:
81/441
Tool Categories:
screwdrivers
:
screwdriver blades
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Edward Ruhe
Thos. P. Wilson
A. T. Grant
W. F. Kircher
Patent Dates:
Applied:
Jul. 28, 1882
Granted:
Nov. 21, 1882
Patent Pictures:
Phillip Nadig patent November 21, 1882
USPTO
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Description:
The patent is for grooves, striations, or file cuts on the tip of the blade which increase the driver's grip on the nick of the screw.
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