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Patent number:
Patent Date:
US Patent: 420,616
Expanding Lathe Mandrel
Patentee:
Latham H. Brightman (
exact
or
similar
names) - Cleveland, Cuyahoga County, OH
USPTO Classifications:
82/169
Tool Categories:
metalworking tools
:
mandrels and arbors
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 30, 1889
Granted:
Feb. 04, 1890
Patent Pictures:
USPTO
(New site tip)
Google Patents
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