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US Patent: 179,750
Improvement in saw-filing machines
Patentee: Gershom Wiborn (exact or similar names) - Manistee, MI USPTO Classifications: 76/31 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Allen McKee Frank L. Ray	Patent Dates: Applied: May 22, 1876 Granted: Jul. 11, 1876 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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