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Patent number:
Patent Date:
US Patent: 177,820
Tap Wrench
Patentee:
James F. Dunigan (
exact
or
similar
names) - Deerfield, MA
USPTO Classifications:
408/240
Tool Categories:
wrenches
:
tap wrenches and die stocks
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
George Turner
Philipp Seibert
Patent Dates:
Applied:
Feb. 08, 1876
Granted:
May 23, 1876
Patent Pictures:
USPTO
(New site tip)
Google Patents
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