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US Patent: 239,389
Polishing and grinding machine
Patentee: David R. B. Kenyon (exact or similar names) - Providence, RI USPTO Classifications: 384/253, 451/361, 474/113 Tool Categories: metalworking machines : grinders : sharpening machines : bench or pedestal grinders Assignees: None Manufacturer: Not known to have been produced Witnesses: George H. Remington Jonathan Cady	Patent Dates: Applied: Jan. 17, 1881 Granted: Mar. 29, 1881 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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