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All Patents in class 123/90.25
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	230,470	Jul. 27, 1880	D. Clerk	Gas Motor Engine
	460,070	Sep. 22, 1891	J.T. Hobbs, D.D. Hobbs	Rotary Gas Engine
	535,815	Mar. 19, 1895	E.E. Pierce, W.L. Crouch	Gas Engine
	816,062	Mar. 27, 1906	I.S. Barnett	Gas Engine

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