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All Patents in class 72/19.4
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	372,423	Nov. 01, 1887	F. Mallet-Guy	Machine for the Manufacture of Wire Spirals
	1,869,006	Jul. 26, 1932	W.W. Criley	Solid Die Header

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