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US Patent: 1,840,231
Grinding Machine
Patentees: Robert E. W. Harrison (exact or similar names) - Cincinnati, OH Fred S. Haas (exact or similar names) - Cincinnati, OH USPTO Classifications: 173/19, 451/125, 451/144, 451/157, 451/239, 451/24, 451/427, 82/137, 82/19, 91/275, 91/37 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, 1927 Granted: Jan. 05, 1932 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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