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All Patents in class 415/121.2
Patents 1 - 6 of 6
Picture	Number	Date	Patentee	Title
	100,239	Feb. 22, 1870	B.F. Sturtevant	Pressure Blower
	146,120	Jan. 06, 1874	O.J. Backus	Water Motors for Sewing-Machines
	887,908	May 19, 1908	C.P. Barby	Apparatus for Shielding Vehicles form Dust
	2,289,474	Jul. 14, 1942	E.L. Anderson	Apparatus for dust collection
	2,732,032	Jan. 24, 1956	A.G. Sandison	Dust collector
	4,325,163	Apr. 20, 1982	D.A. Milliken, G.M. Zink, C.A. Mattson	Portable blower-vacuum unit

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