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All Patents in class 451/170
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	445,349	Jan. 27, 1891	W. Bauch	Lens Grinding Machine
	1,701,814	Feb. 12, 1929	W.J. Maddox	Edge and spindle sander
	2,197,538	Apr. 16, 1940	G.W. Binns, A.H. Dall	Metal Finishing Machine
	2,302,026	Nov. 17, 1942	H.C. Weimar, B.P. Graves	Machine Tool

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