All Patents in class 92/189


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All Patents in class 92/189
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	331,360	Dec. 01, 1885	E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury	Piston for Air Pumps
	821,546	May 22, 1906	H.E. Smallbone	Multiple Cylinder Engine
	2,059,713	Nov. 03, 1936	H. Schneider	Engine Piston