All Patents in class 336/229


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All Patents in class 336/229
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	359,205	Mar. 08, 1887	F.B. Crocker, S.S. Wheeler, C.G. Curtis	Armature and Process of and Apparatus for Forming the Same
	433,702	Aug. 05, 1890	N. Tesla	Electrical transformer or induction device