All Patents in class 92/220


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All Patents in class 92/220
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	331,360	Dec. 01, 1885	E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury	Piston for Air Pumps
	407,320	Jul. 23, 1889	C.W. Baldwin	Gas Engine
	2,059,713	Nov. 03, 1936	H. Schneider	Engine Piston
	2,104,347	Jan. 04, 1938	E.T. Larkin	Piston