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Patents for H. C. Hagen
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	306,254	Oct. 07, 1884	G.M. Hopkins	Gas Engine
	326,561	Sep. 22, 1885	L.N. Hopkins, G.M. Hopkins	Gas Engine
	326,562	Sep. 22, 1885	L.N. Hopkins, G.M. Hopkins	Gas Engine

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