All Patents in class 416/183


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All Patents in class 416/183
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	32,131	Apr. 23, 1861	C. Greenawalt	Water Wheel
	450,874	Apr. 21, 1891	J. Schwarzmann	Rotary Engine
	2,480,807	Aug. 30, 1949	C.B. De Vlieg	Method and apparatus for making impeller wheels