All Patents in class 310/28


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All Patents in class 310/28
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	520,810	Jun. 05, 1894	E. Thomson	Electric Reciprocating Motor
	1,797,253	Mar. 24, 1931	C.S. Weyandt	Reciprocating motor
	2,786,950	Mar. 26, 1957	T.F. Carmichael, E.G. Sturgeon	Vibratory power tool
	2,878,404	Mar. 17, 1959	T.F. Carmichael	Electromagnetic device