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All Patents in class 261/90
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	138,409	Apr. 29, 1873	T. Judd, E. Doty	Improvement in apparatus for carbureting air
	845,460	Feb. 26, 1907	W.W. Gore	Centrifugal Tar Extractor
	1,866,196	Jul. 05, 1932	A.A. Criqui, R.T. Thornton	Gas purifier or scrubber

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