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Patents for John L. Lay
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	66,972	Jul. 23, 1867	J.L. Lay	Compound Steam Engine
	66,973	Jul. 23, 1867	J.L. Lay	Steam Engine
	66,975	Jul. 23, 1867	J.L. Lay	Compound Steam Engine

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