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Patent number:
Patent Date:
US Patent: 1,116,532
Screwdriver Attachment
Patentee:
Ralph A. Armstrong (
exact
or
similar
names) - Atlanta, GA
USPTO Classifications:
279/42
,
279/46.3
,
81/453
Tool Categories:
screwdrivers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Frank W. Holt, Jr.
Chas. A. Dean
Patent Dates:
Applied:
Mar. 14, 1912
Granted:
Nov. 10, 1914
Patent Pictures:
USPTO
(New site tip)
Google Patents
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