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US Patent: 1,918,331
Combined Eccentric and Concentric Turning Apparatus
Patentees: William F. Groene (exact or similar names) - Cincinnati, OH Arthur W. Aufderhar (exact or similar names) - Cincinnati, OH USPTO Classifications: 125/11.05, 82/132, 82/138, 82/17, 82/19 Tool Categories: metalworking machines : metal lathes Assignees: R. K. Le Blond Machine Tool Co. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 24, 1931 Granted: Jul. 18, 1933 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for R. K. Leblond Machine Tool Co.

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