All Patents in class 340/679


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All Patents in class 340/679
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	890,697	Jun. 16, 1908	J.E. Noeggerath	Protective device for unipolar machines
	1,040,378	Oct. 08, 1912	W.L. Miller	Electric Signaling System
	2,350,174	May 30, 1944	H.N. Stephan, H.M. Lucas	Boring Machine
	2,902,904	Sep. 08, 1959	R.L. Henry, J.A. Rave, Jr.	Control System for Machine Tools