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US Patent: 352,988
Wood-polishing machine Drum sander
Patentees: Almon Bridgman (exact or similar names) - Berlin, WI John Challoner (exact or similar names) - Omro, WI USPTO Classifications: 451/501, 451/522 Tool Categories: woodworking machines : sanding machines Assignees: Yates Mfg. Co. - Berlin, WI Manufacturer: Berlin Machine Works - Berlin, WI Witnesses: A. D. McIntyer H. G. Bridgman J. A. Markley O. B. Osborn	Patent Dates: Granted: Nov. 23, 1886 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Berlin Machine Works

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