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Patent number:
Patent Date:
US Patent: 642,310
Automatically Opening or Closing Die
Patentee:
Franklin A. Errington (
exact
or
similar
names) - New York, NY
USPTO Classifications:
408/147
Tool Categories:
metalworking tools
:
taps and dies
metalworking tools
:
tap and die holders
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Nov. 17, 1898
Granted:
Jan. 30, 1900
Patent Pictures:
USPTO
(New site tip)
Google Patents
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