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US Patent: 200,980
Improvement in cutter-heads
Patentee: Columbus M. Coulter (exact or similar names) - Danville, IL USPTO Classifications: 144/226 Tool Categories: woodworking machines : machine and tool cutters : cutterheads Assignees: Ezra A. Leonard - Danville, IL Manufacturer: Not known to have been produced Witnesses: G. G. Mabin P. Wilber	Patent Dates: Applied: Feb. 09, 1878 Granted: Mar. 05, 1878 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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