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All Patents in class 177/157
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	442,720	Dec. 16, 1890	F.H. Richards	Grain-weigher
	2,281,838	May 05, 1942	H.A. Hadley	Beam Locking Device
	2,336,407	Dec. 07, 1943	E.J. Lynch	Control Means for Weighing Scales

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