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Patents for Nathan H. Whitten
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	162,260	Apr. 20, 1875	N.H. Whitten	Improvement in operating paper-calendering rolls
	184,054	Nov. 07, 1876	N.H. Whitten	Improvement in paper-calendering machines

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