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US Patent: 330,999
Screw Tap
Patentee: Richard C. Nugent (exact or similar names) - Pittsburg, Allegheny County, PA USPTO Classifications: 408/169, 470/199 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: Jun. 08, 1885 Granted: Nov. 24, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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