All Patents in class 318/150


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All Patents in class 318/150
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	865,813	Sep. 10, 1907	W.H. Powell	Methods and means for controlling electric motors
	865,814	Sep. 10, 1907	W.H. Powell	Motor-control system
	865,816	Sep. 10, 1907	W.H. Powell	Motor-control system
	924,786	Jun. 15, 1909	H.D. James	System of Electric Motor Control
	3,305,762	Feb. 21, 1967	C.E. Geib, Jr.	Method of control of electric power