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All Patents in class 310/138
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	660,908	Oct. 30, 1900	B.G. Lamme	Variable-speed electric motor
	1,201,837	Oct. 17, 1916	J.C. Lincoln	Portable Means for Securing the Reverse Flow of Electric Current
	1,298,966	Apr. 01, 1919	J.S. Knowlson	Electrically-operated tool

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