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Patent number:
Patent Date:
US Patent: 2,188,158
Screw driver
Patentee:
George L. Rock (
exact
or
similar
names) - North Adams, MI
USPTO Classifications:
279/82
,
74/127
,
74/57
Tool Categories:
screwdrivers
:
screwdriver mechanisms
:
spiral screwdrivers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 03, 1937
Granted:
Jan. 23, 1940
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward George Langford
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