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US Patent: 59,193
Improved saw-filing machine
Patentee: John W. H. Doubler (exact or similar names) - Chicago, IL USPTO Classifications: 76/33 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: None Manufacturer: Not known to have been produced Witnesses: D. A. Cashman W. E. Mans	Patent Dates: Granted: Oct. 30, 1866 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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