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Patents for Howard W. Bartholomew
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,069,299Feb. 02, 1937H.W. BartholomewMilling Machinemilling machines
RE20,893Oct. 25, 1938H.W. BartholomewMilling Machinemilling machines
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