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Patent number:
Patent Date:
US Patent: 2,641,478
Screwdriver
Patentee:
Joseph A. Sigg (
exact
or
similar
names) - Pittsburgh, PA
USPTO Classifications:
279/23.1
Tool Categories:
screwdrivers
:
screwdriver mechanisms
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
none listed
Patent Dates:
Applied:
Oct. 18, 1947
Granted:
Jun. 09, 1953
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz
Description:
William B. Jaspert - patent attorney
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