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US Patent: 2,280,620
Apparatus for Finishing Tubular Articles
Patentees: George W. Binns (exact or similar names) - Cincinnati, OH Frederick J. Theler (exact or similar names) - Cincinnati, OH USPTO Classifications: 279/2.01, 279/2.05, 279/2.23, 279/22, 279/30, 279/75, 451/209, 451/242, 492/42, 82/168 Tool Categories: metalworking machines : grinding machines Assignees: Cincinnati Grinders, Inc. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 28, 1939 Granted: Apr. 21, 1942 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Grinders, Inc.

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