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US Patent: 2,561,004
Method and Apparatus for Grinding
Patentees: John C. Wilson (exact or similar names) - Springfield, Clark County, OH William G. Baldenhofer (exact or similar names) - Springfield, Clark County, OH USPTO Classifications: 125/11.03, 451/200, 451/28, D15/124 Tool Categories: metalworking machines : grinders : surface grinders Assignees: Thompson Grinder Co. - Springfield, Clark County, OH Manufacturer: Thompson Grinder Co. - Springfield, Clark County, OH Witnesses: Unknown	Patent Dates: Applied: Aug. 27, 1949 Granted: Jul. 17, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Thompson Grinder Co.
Description: This patent was listed on a Thompson Grinder Co. patent plate.

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