All Patents in class 340/870.24


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All Patents in class 340/870.24
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	2,020,548	Nov. 12, 1935	R.E. Harrison	Testing Apparatus for Surface Finish
	3,258,667	Jun. 28, 1966	J. Steranka, Jr., J.O. McDonough	Phase Shift Decoder for a Servo Control