All Patents in class 451/906


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All Patents in class 451/906
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	544,439	Aug. 13, 1895	A.B. Landis	Grinding-machine
	709,178	Sep. 16, 1902	S.C. Schofield	Tool Holder and Guide for Grindstones
	1,522,465	Jan. 06, 1925	G.C. Kimmel	Internal Grinding Machine
	1,550,712	Aug. 25, 1925	J.A. Smith	Grinding machine
	2,363,946	Nov. 28, 1944	L.W. Curry	Grinding Machine