All Patents in class 81/470


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All Patents in class 81/470
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,616,323	Nov. 04, 1952	L.A. Leifer	Power Actuated Wrench
	2,953,903	Sep. 27, 1960	L. Kramer, D.K. Skoog	Hydraulic system for operating simultaneously a plurality of power units
	3,686,983	Aug. 29, 1972	A. Flagge	Torque applying and tension controlling device