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US Patent: 640,751
Device for Truing Wrist Pins
Patentee:
Thomas Corwin (exact or similar names) - Cleveland, Cuyahoga County, OH

USPTO Classifications:
15/104.012, 82/128, 82/164

Tool Categories:
metalworking tools : portable turning tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 18, 1899
Granted: Jan. 09, 1900

Patent Pictures:
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