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All Patents in class 91/15
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	144,731	Nov. 18, 1873	G.W. Bishop	Mechanisms for Reversing Engines
	313,729	Mar. 10, 1885	D.D. Hardy	Steam Engine Valve
	403,881	May 21, 1889	D.A. Frazer	Reversing Gear for Steam Engines

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