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US Patent: 1,412,550
Screw Driver
Screw Gripping Screwdriver
Patentee:
Ben L. Bentley - Franklin, PA

USPTO Classifications:
81/453

Tool Categories:
screwdrivers : screwdriver blades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Aug. 19, 1921
Granted: Apr. 11, 1922

Patent Pictures:
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Description:
This Patent for a screw holding screw driver,was purchased by Seth J.Cox and improved upon in Patent1562543 and 2185910 both were produced.

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