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US Patent: 211,911
Metal Screw Machine
Patentee: Allen Johnson (exact or similar names) - Ottumwa, Wapello County, IA USPTO Classifications: 279/66, 470/62, 74/53 Tool Categories: metalworking machines : screw machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 12, 1878 Granted: Feb. 04, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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