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All Patents in class 74/424.72
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,407,160	Feb. 21, 1922	D.C. Klausmeyer	Declutchable Safety Collar for Rotatable Nuts
	3,393,577	Jul. 23, 1968	B.R. Better	Pre-Loaded Ball Screw Assembly

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