All Patents in class 116/137R


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All Patents in class 116/137R
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	44,006	Aug. 30, 1864	E.K. Lincoln, L.E. Lincoln	Improvement in Steam-Boiler Whistles
	636,907	Nov. 14, 1899	F. Lane	Whistle Valve
	1,066,079	Jul. 01, 1913	F. Casey	Signal for trains