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US Patent: 391,510
Screw Cutting Die
Patentee: James M. Carpenter (exact or similar names) - Pawtucket, RI USPTO Classifications: 408/156, 408/179 Tool Categories: Assignees: None Manufacturer: Unknown Witnesses: J. Eugene Osgood A. F. Anderson	Patent Dates: Applied: Jun. 05, 1888 Granted: Oct. 23, 1888 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Size of the cutting opening is regulated by use of a split die and a tapered hole and pin on the side. Known example marked with the patent date and large "V" with a smaller "C" inside.

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