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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:
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