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US Patent: 1,704,741
Automatic Die
Patentee: James Hartness (exact or similar names) - Springfield, Windsor County, VT USPTO Classifications: 408/148, 408/154 Tool Categories: metalworking tools : taps and dies metalworking tools : tap and die holders Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 19, 1924 Granted: Mar. 12, 1929 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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