All Patents in class 416/184


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All Patents in class 416/184
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	100,236	Feb. 22, 1870	B.F. Sturtevant	Pressure Blower Wheel
	D4,629	Feb. 07, 1871	C.S. Hall	Design for a show-card
	2,727,680	Dec. 20, 1955	R.D. Robson, R.D. Madison, H.C. Burgin, W.R. Elliot	Centrifugal fan