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Patents for William P. Black
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
285,123Sep. 18, 1883J.H. GowanCar Wheel Boring and Truing Machinehorizontal boring mills
287,762Oct. 30, 1883J.H. GowanCar Wheel Truing Machinecar wheel lathes
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