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US Patent: 2,586,755
Method and Apparatus for Grinding
Patentee: John C. Wilson (exact or similar names) - Springfield, Clark County, OH USPTO Classifications: 125/11.01, 451/56, 451/57, 451/72 Tool Categories: metalworking machines : grinders : grinder dressers Assignees: Thompson Grinder Co. - Springfield, Clark County, OH Manufacturer: Thompson Grinder Co. - Springfield, Clark County, OH Witnesses: Unknown	Patent Dates: Applied: Mar. 28, 1946 Granted: Feb. 19, 1952 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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