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All Patents in class 91/206
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	182,196	Sep. 12, 1876	L. Huntoon	Improvement in compound steam-engines
	1,940,142	Dec. 19, 1933	R.W. Ott	Milling Machine
	2,127,324	Aug. 16, 1938	E. Cannon	Prefill valve for hydraulic presses

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