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US Patent: 2,250,633
Taper attachment
Patentees: George W. Luning (exact or similar names) - Cincinnati, OH William F. Groene (exact or similar names) - Cincinnati, OH USPTO Classifications: 82/17 Tool Categories: metalworking machines : metal lathes : metal lathe accessories and attachments Assignees: R. K. LeBlond Machine Tool Co. - Cincinnati, OH Manufacturer: R. K. LeBlond Machine Tool Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Apr. 11, 1940 Granted: Jul. 29, 1941 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for R. K. LeBlond Machine Tool Co.
Description: Improvements to patent 2,198,090.

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