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Patent number:
Patent Date:
US Patent: 1,439,190
Boring or Surfacing Tool Holder
Patentee:
Howard P. Pritchard (
exact
or
similar
names) - Cleveland, Cuyahoga County, OH
USPTO Classifications:
279/6
,
409/218
,
409/234
Tool Categories:
metalworking machines
:
milling machines
:
milling machine tools
metalworking machines
:
drilling and boring
:
drilling and boring tool holders
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Dec. 22, 1919
Granted:
Dec. 19, 1922
Patent Pictures:
USPTO
(New site tip)
Google Patents
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