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US Patent: 529,169
Screw Cutting Die
Patentee: James Hartness (exact or similar names) - Springfield, Windsor County, VT USPTO Classifications: 408/142, 408/174, 470/66, 470/75 Tool Categories: metalworking tools : tap and die holders Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 09, 1894 Granted: Nov. 13, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Jones, Lamson & Co.

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