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Patent number:
Patent Date:
US Patent: 391,880
Screw-driver
Patentee:
Michael Cashin (
exact
or
similar
names) - New York, NY
USPTO Classifications:
192/43.1
,
74/127
Tool Categories:
screwdrivers
:
screwdriver mechanisms
:
spiral screwdrivers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Edward Whelan
Joseph Cashin
Patent Dates:
Applied:
Mar. 31, 1888
Granted:
Oct. 30, 1888
Patent Pictures:
USPTO
(New site tip)
Google Patents
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