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Patent number:
Patent Date:
US Patent: 639,232
Screw Cutting Die
Patentee:
Cornelius J. Harrington (
exact
or
similar
names) - Boston, Suffolk County, MA
USPTO Classifications:
408/177
Tool Categories:
metalworking tools
:
tap and die holders
metalworking tools
:
taps and dies
Assignees:
Thomas Hoey
- Boston, Suffolk County, MA
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 27, 1899
Granted:
Dec. 19, 1899
Patent Pictures:
USPTO
(New site tip)
Google Patents
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