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US Patent: 403,518
Hinge Mortiser
Patentees: William Cooper (exact or similar names) - Minneapolis, Hennepin County, MN Alonzo Milliken (exact or similar names) - Minneapolis, Hennepin County, MN George W. Bishop (exact or similar names) - Minneapolis, Hennepin County, MN USPTO Classifications: 30/167.1 Tool Categories: woodworking tools : chisels : mortise chisels Assignees: Northwestern Tool & Implement Co. - Minneapolis, Hennepin County, MN Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 02, 1888 Granted: May 21, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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