All Patents in class 178/98


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All Patents in class 178/98
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	29,761	Aug. 28, 1860	L. Bradley	Improvements in Telegraphic Apparatus
	498,763	Jun. 06, 1893	R. Callender	Electro-motive device