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Patents for William S. Duvall
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	310,908	Jan. 20, 1885	J.P. Herron, E. Morrison	Thickness Gage
	478,121	Jul. 05, 1892	W.S. Duvall, W. Miller	Wrench
	484,307	Oct. 11, 1892	C.C. Fields, W.S. Duvall	Wrench

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