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US Patent: 639,232
Screw Cutting Die
Patentee: Cornelius J. Harrington (exact or similar names) - Boston, Suffolk County, MA USPTO Classifications: 408/177 Tool Categories: metalworking tools : tap and die holders metalworking tools : taps and dies Assignees: Thomas Hoey - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 27, 1899 Granted: Dec. 19, 1899 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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