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Patent number:
Patent Date:
US Patent: 140,113
Mandrils for Holding Tapered Cast Rings
Patentee:
George E. Brettell (
exact
or
similar
names) - Rochester, Monroe County, NY
USPTO Classifications:
82/168
Tool Categories:
metalworking tools
:
mandrels and arbors
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Oct. 05, 1872
Granted:
Jun. 24, 1873
Patent Pictures:
USPTO
(New site tip)
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