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Patents for James Duncan
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
141,264Jul. 29, 1873W.H. Arnold, J. DuncanImprovement in hub-boring machineswheelwright
157,162Nov. 24, 1874W.H. Talbot, J. DuncanImprovement in Bench Planesscraper planes
315,014Apr. 07, 1885J. DuncanBench planescraper planes
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