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US Patent: 658,540
Rotary Nut
Patentees: Frederich Wilhelm Bühne (exact or similar names) - Freiburg, Baden-Württemberg, Germany August Ritz (exact or similar names) - St. Georgen, Schwarzwald-Baar County, Baden-Württemberg, Germany USPTO Classifications: 269/174, 82/136 Tool Categories: metalworking machines : metalworking machine mechanisms metalworking machines : metal lathes Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 12, 1900 Granted: Sep. 25, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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