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All Patents in class 310/235
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,195,861Aug. 22, 1916E.F. SmithManufacture and construction of commutatorshandheld power tools
1,255,681Feb. 05, 1918C.C. ZenkCommutatormotor commutators
1,284,362Nov. 12, 1918W.H. KemptonMolded commutator-cylindermotor commutators
1,284,524Nov. 12, 1918C.E. Wilson, W.H. Kempton, A.J. BastianMolded commutator-cylindermotor commutators
1,360,165Nov. 23, 1920C.C. ZenkMethod for making commutatorsmachine making
1,360,166Nov. 23, 1920C.C. ZenkCommutatormotor commutators
1,369,408Feb. 22, 1921F. DiehlCommutator and commutator-barmotor commutators
1,669,134May 08, 1928N.T. KelsoMolded commutatorelectric motor making
3,471,731Oct. 07, 1969R.M. Pierce, L.C. PrattArmatureelectric motors
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