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US Patent: 6,858
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Patentees: Benjamin M. Townsend (exact or similar names) - Quincy, IL Jerome B. Woodruff (exact or similar names) - Washington, DC USPTO Classifications: 76/31 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: None Manufacturer: Not known to have been produced Witnesses: E. S. Renwick William D. Washington	Patent Dates: Granted: Nov. 06, 1849 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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