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Patents for Charles D. Wainwright
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	390,899	Oct. 09, 1888	C.D. Wainwright, R.F. Pratt	Machine for Corrugating Wrought Metal Tubes
	434,060	Aug. 12, 1890	C.D. Wainwright, J.S. Hansen	Machine for Corrugating Tubes

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