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All Patents in class 81/57.36
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	439,388	Oct. 28, 1890	E.S. Cushman	Wrench
	1,141,864	Jun. 01, 1915	P.J. Boucher	Tool Holder
	2,807,972	Oct. 01, 1957	W.G. Mitchell	Multiple unit assembly for rotary tools

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