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US Patent: 2,249,243
Chucking Mechanism
Patentee: Willard L. Groene (exact or similar names) - Cincinnati, OH USPTO Classifications: 82/106, 82/165 Tool Categories: metalworking machines : metal lathes : metal lathe chucks metalworking machines : metal lathes : crankshaft lathes Assignees: R. K. Le Blond Machine Tool Co. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 15, 1940 Granted: Jul. 15, 1941 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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