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All Patents in class 403/306
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	50,700	Oct. 31, 1865	G.H. Fox	Improvement in shaft-couplings
	50,838	Nov. 07, 1865	H.W. Olney	Improvement in Attaching Augers to their Handles
	680,815	Aug. 20, 1901	L.S. Starrett	Square
	777,215	Dec. 13, 1904	C.R. Meston	Shaft-coupling

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