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US Patent: 4,259,815
Blade sharpener
Patentee: William G. Kuban (exact or similar names) - Columbia Heights, MN USPTO Classifications: 451/552, 451/557, 76/86 Tool Categories: knives and cutters : sharpening apparatus Assignees: Kurt Mfg. Co., Inc. - Minneapolis, MN Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 06, 1979 Granted: Apr. 07, 1981 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Kurt Mfg. Co.

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