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US Patent: 427,818
Boring and mortising machine
Hand-cranked portable chain mortiser
Otis W. Young - Charles City, IA

USPTO Classifications:
144/123, 144/73

Tool Categories:
woodworking machines : human powered machines
woodworking machines : joint making machines : portable timber mortisers
woodworking machines : wood drilling and boring : portable timber mortisers

Jerome B. Cable - Minneapolis, MN
Wallace G. Collins - Minneapolis, MN
Benjamin Tyley Bailey - Charles City, IA
Delevan E. Moore - Charles City, IA

Not known to have been produced

H. C. Ireland
S. F. Farnham

Patent Dates:
Applied: Aug. 03, 1889
Granted: May 13, 1890

Patent Pictures:
USPTO pdf tiff
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