Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 267,709
Screw Driver
Patentee:
Phillip Nadig - 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 pdf tiff
Google Patents
Report data errors or omissions
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.

Copyright © 2002-2017 - DATAMP