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US Patent: 152,473
Improvement in mortising-machines
Patentee: George B. Durkee (exact or similar names) - Chicago, IL USPTO Classifications: 144/77 Tool Categories: woodworking machines : joint making machines : mortising machines woodworking machines : wood drilling and boring : mortising machines Assignees: George B. Durkee - Chicago, IL Hiram P. Minot - Chicago, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 22, 1873 Granted: Jun. 30, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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