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US Patent: 1,780,886
Circular-saw-sharpening machine
Patentees: Eugene F. Mitchell (exact or similar names) - Spokane, WA John F. Pribnow (exact or similar names) - San Diego, CA USPTO Classifications: 451/121, 451/403, 76/40 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: Arthur W. Pribnow - San Diego, CA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 23, 1928 Granted: Nov. 04, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: John F. Pribnow was deceased by the time the patent was issued.

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