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All Patents in class 175/413
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	49,034	Jul. 25, 1865	C.W. Johnson	Improvement in rock-drills
	2,998,333	Aug. 29, 1961	E.J. Kielma, A.H. Fotsch	Machine Tool for Removing Material from a Container

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