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US Patent: 162,356
Improvement in saw-filing machines
Patentee: Thomas Doyle (exact or similar names) - Bridgeport Centre, MI USPTO Classifications: 76/34, 76/79 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: None Manufacturer: Not known to have been produced Witnesses: H. F. Eberts H. S. Sprague	Patent Dates: Applied: Jan. 15, 1875 Granted: Apr. 20, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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