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US Patent: 406,857
Screw Cutting Die
Patentee: Alexander Saunders (exact or similar names) - Yonkers, Westchester County, NY USPTO Classifications: 279/115, 408/176, 470/75 Tool Categories: metalworking machines : metal threading machines : pipe threading machines Assignees: D. Saunders' Sons - Yonkers, Westchester County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 11, 1889 Granted: Jul. 09, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for D. Saunders' Sons

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