All Patents in class 55/325


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All Patents in class 55/325
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	2,430,448	Nov. 11, 1947	R. Breckheimer	Dust collector
	2,990,032	Jun. 27, 1961	R.L. Sandvig	Separator for use with rock drills