All Patents in class 307/18


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All Patents in class 307/18
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	248,435	Oct. 18, 1881	T.A. Edison	Utilizing Electricity as Motive Power
	469,515	Feb. 23, 1892	M. von Dolivo-Dobrowolsky	Electric machine