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US Patent: 142,731
Improvement in cutter-heads for planing-machines
Patentee: Ephraim G. Richards (exact or similar names) - Detroit, MI USPTO Classifications: 144/224 Tool Categories: woodworking machines : machine and tool cutters : cutterheads Assignees: None Manufacturer: Not known to have been produced Witnesses: Charles E. B. Huestis H. S. Sprague	Patent Dates: Applied: Jul. 14, 1873 Granted: Sep. 09, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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