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US Patent: 694,056
Sharpening Device for Grinding-Plates
Patentee: Robert H. Foos (exact or similar names) - Springfield, Clark County, OH USPTO Classifications: 451/419 Tool Categories: metalworking machines : grinding machines Assignees: Foos Manufacturing Co. - Springfield, Clark County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 06, 1901 Granted: Feb. 25, 1902 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Foos Manufacturing Co.

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