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All Patents in class 91/221
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	47,359	Apr. 18, 1865	J. Jackman, Jr.	Steam Cut-Off
	195,804	Oct. 02, 1877	A. Cunningham	Auromatic Expansion Gearing for Steam Engines
	483,643	Oct. 04, 1892	L.H. Wattles, G.F. Corliss	Steam Engine Governor

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