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Patent number:
Patent Date:
US Patent: 336,560
Screw-Driver
Patentee:
John S. Fray (
exact
or
similar
names) - Bridgeport, CT
USPTO Classifications:
81/33
Tool Categories:
screwdrivers
:
screwdriver mechanisms
:
ratcheting screwdrivers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
A. M. Wooster
C. E. Ruggles
Patent Dates:
Applied:
Nov. 07, 1885
Granted:
Feb. 23, 1886
Patent Pictures:
USPTO
(New site tip)
Google Patents
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