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Patent number:
Patent Date:
US Patent: 122,921
Improvement in Machines for Facing the Ends of Tubes and Hollow Cylinders
Patentee:
Nathan P. Stevens (
exact
or
similar
names) - Hopkinton, Merrimack County, NH
USPTO Classifications:
82/128
Tool Categories:
metalworking machines
:
pipe deburring machines
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Granted:
Jan. 23, 1872
Patent Pictures:
USPTO
(New site tip)
Google Patents
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