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US Patent: 2,002,921
Grinding Machinery
Patentee: Lester F. Nenninger (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 451/142 Tool Categories: metalworking machines : grinding machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 03, 1933 Granted: May 28, 1935 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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