Patents for Charles C. Zenk


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Patents for Charles C. Zenk
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,255,681	Feb. 05, 1918	C.C. Zenk	Commutator
	1,360,165	Nov. 23, 1920	C.C. Zenk	Method for making commutators
	1,360,166	Nov. 23, 1920	C.C. Zenk	Commutator