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US Patent: 2,160,778
Bearing
Patentees: Albert H. Dall (exact or similar names) - Cincinnati, OH Hans Ernst (exact or similar names) - Cincinnati, OH USPTO Classifications: 184/6.3, 277/369, 384/309 Tool Categories: metalworking machines : grinding machines Assignees: Cincinnati Grinders, Inc. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 02, 1936 Granted: May 30, 1939 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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