All Patents in class 137/625.32


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All Patents in class 137/625.32
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	25,005	Aug. 09, 1859	B. Fitts	Improvement in governor-valves
	RE921	Mar. 06, 1860	A. Crosby	Improved valve for steam-engines
	205,982	Jul. 16, 1878	F.M. Stevens	Improvement in rotary valves
	1,772,406	Aug. 05, 1930	L.E. Whiton	Valve