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US Patent: 1,938,757
Grinding Machine
Patentees: Sol Einstein (exact or similar names) - Cincinnati, OH Frederick S. Haas (exact or similar names) - Cincinnati, OH USPTO Classifications: 409/900.2, 451/140, 451/242 Tool Categories: metalworking machines : grinding machines Assignees: Cincinnati Grinders, Inc. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 22, 1930 Granted: Dec. 12, 1933 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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