All Patents in class 451/523


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All Patents in class 451/523
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,968,215	Jul. 31, 1934	N.F. McNaught, E.H. Peterson	Tool for cleaning commutators and the like
	2,248,884	Jul. 08, 1941	J.F. McAdams	Sanding block
	2,252,190	Aug. 12, 1941	J.F. McAdams	Sanding block