All Patents in class 336/84R


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All Patents in class 336/84R
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	392,385	Nov. 06, 1888	E. Weston	Electroplated coil for electrical measuring-instruments
	422,746	Mar. 04, 1890	M. von Dolivo-Dobrowolsky	Electric induction apparatus or transformer
	433,702	Aug. 05, 1890	N. Tesla	Electrical transformer or induction device
	2,279,014	Apr. 07, 1942	M.B. Sawyer	Electromagnetic apparatus