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US Patent: 839,080
Grinding-machine Machine for grinding ball bearing races
Patentee: Clayton O. Smith (exact or similar names) - Worcester, MA USPTO Classifications: 451/123 Tool Categories: metalworking machines : grinders Assignees: Norton Emery Wheel Co. - Worcester, MA Manufacturer: Norton Grinding Co. - Worcester, MA Witnesses: F. H. Lincoln John C. Hilburn	Patent Dates: Applied: Oct. 31, 1904 Granted: Dec. 18, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Norton Co.

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