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Patents for W. B. Thomson
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
RE8,115Mar. 12, 1878H.S. BartholomewImprovement in Bit-Stocksbrace chucks
271,947Feb. 06, 1883E. ThomsonCommutator for Dynamo Machinesmotor commutators
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