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US Patent: 465,478
Grinding Machine
Patentee: Allen Johnston (exact or similar names) - Ottumwa, Wapello County, IA USPTO Classifications: 29/DIG.101, 29/DIG.71, 451/273, 451/387 Tool Categories: knives and cutters : sharpening apparatus Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 06, 1891 Granted: Dec. 22, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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