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US Patent: 7,807
Machine for boring dovetailed mortises
Patentee: Henry J. Betjemann (exact or similar names) - Cincinnati, OH USPTO Classifications: 144/129, 144/87, 269/139 Tool Categories: woodworking machines : joint making machines : mortising machines metalworking machines : drilling and boring woodworking machines : wood drilling and boring : mortising machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Edward H. Knight E. H. Pugh	Patent Dates: Granted: Dec. 03, 1850 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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