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US Patent: 2,785,511
Grinding Machine and Method of Operation
Patentee: John C. Wilson (exact or similar names) - Springfield, Clark County, OH USPTO Classifications: 318/481, 318/771, 451/213, 451/28, 451/294 Tool Categories: metalworking machines : grinders : surface grinders Assignees: Thompson Grinder Co. - Springfield, Clark County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 12, 1954 Granted: Mar. 19, 1957 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Thompson Grinder Co.

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