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All Patents in class 460/87
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,467	Feb. 21, 1842	A. Ralston	Grain Separator
	5,509	Apr. 11, 1848	A. Smith	Grain Separator
	RE342	Jan. 15, 1856	A. Ralston	Grain Separator

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