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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:
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Report data errors or omissions to steward Stan Schulz
Description:
William B. Jaspert - patent attorney

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