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US Patent: 81,049
Screw Threading Machine
Patentee: S. Lloyd Wiegand (exact or similar names) - Philadelphia, PA USPTO Classifications: 82/136 Tool Categories: metalworking machines : screw machines metalworking machines : metal threading machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Aug. 11, 1868 Antedated: Jul. 29, 1868 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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