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All Patents in class 222/135
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	1,241,212	Sep. 25, 1917	C.L. Heisler	Powder Blending Apparatus
	1,504,543	Aug. 12, 1924	E.R. Draver	Feeding agitator
	1,521,014	Dec. 30, 1924	E.R. Draver	Regulating device for percentage feeders
	5,248,068	Sep. 28, 1993	S.R. Wente, N.C. Rittmann Gasperi, R.S. Goergen	Caulk Gun with Ergonomic Handles

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