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CA Patent: CA-512,794
Method and apparatus for grinding
Patentees: William G. Baldenhofer (exact or similar names) - Springfield, OH John Clifford Wilson (exact or similar names) - Springfield, OH USPTO Classifications: Tool Categories: metalworking machines : grinders : profile and contour grinders Assignees: Thompson Grinder Co. - Springfield, OH Manufacturer: Thompson Grinder Co. - Springfield, OH Witnesses: Unknown	Patent Dates: Granted: May 10, 1955 Patent Pictures: CIPO Data Report data errors or omissions to steward Jeff Joslin "Vintage Machinery" entry for Thompson Grinder Co.

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