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US Patent: 90,972
Improvement in saw-filing machines
Patentee: William Tucker (exact or similar names) - Philadelphia, PA USPTO Classifications: 76/29, 76/41, 76/45, 76/79 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: Prince A. Snell - Pittsburgh, PA William Tucker - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: P. A. Sorrell William B. Dayton	Patent Dates: Granted: Jun. 08, 1869 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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