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US Patent: 1,639,958
Centerless Grinding Machine
Patentee: Charles H. Norton (exact or similar names) - Cincinnati, OH USPTO Classifications: 451/189, 451/242, 451/324, 451/407 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. 28, 1922 Granted: Aug. 23, 1927 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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