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US Patent: 1,772,544
Truing Device for Abrasive Wheels Used in Producing Ground Articles
Patentee: Lewis R. Heim (exact or similar names) - Cincinnati, OH USPTO Classifications: 125/11.06, 451/245 Tool Categories: metalworking machines : grinding machines Assignees: Cincinnati Grinders, Inc. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 16, 1923 Granted: Aug. 12, 1930 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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