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US Patent: 925,181
Screw Cutting Device
Patentee: Louis F. Hart (exact or similar names) - Cleveland, Cuyahoga County, OH USPTO Classifications: 408/110, 408/153, 408/56, 470/188 Tool Categories: metalworking tools : tap and die holders metalworking tools : taps and dies Assignees: Hart Mfg. Co. - Cleveland, Cuyahoga County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 25, 1907 Granted: Jun. 15, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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