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US Patent: 18,535
Method of reversing the chisel in mortising-machines
Patentees: D. M. Cummings (exact or similar names) - North Enfield, NH P. C. Cambridge, Jr. (exact or similar names) - North Enfield, NH USPTO Classifications: 144/77, 408/1R, 408/20 Tool Categories: woodworking machines : joint making machines : mortising machines woodworking machines : wood drilling and boring : mortising machines Assignees: None Manufacturer: Not known to have been produced Witnesses: J. F. Patton Convers G. Morgan	Patent Dates: Granted: Nov. 03, 1857 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for P. C. Cambridge

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