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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:
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