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US Patent: 17,183
Method of reversing chisels of mortising-machines
Patentee: Moses Marshall (exact or similar names) - Lowell, MA USPTO Classifications: 144/77 Tool Categories: woodworking machines : joint making machines : mortising machines woodworking machines : wood drilling and boring : mortising machines Assignees: Charles H. Ballard - Worcester, MA Richard Ball - Worcester, MA Manufacturer: Ball & Ballard - Worcester, MA Witnesses: Appleton Dadman J. Henry Hill	Patent Dates: Granted: Apr. 28, 1857 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Ball & Ballard

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