All Patents in class 417/193


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All Patents in class 417/193
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	224,762	Feb. 24, 1880	J.S. Bancroft	Injector for Feeding Boilers
	851,041	Apr. 23, 1907	W.T. Strain	Injector
	2,389,656	Nov. 27, 1945	E. Henkel, A. Williams	Injector