All Patents in class 310/21


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All Patents in class 310/21
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	958,354	May 17, 1910	C.E. Avery	Electric motor
	2,632,121	Mar. 17, 1953	T.F. Carmichael	Vibratory electric motor and tool driven thereby