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All Patents in class 148/641
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,138,811	Dec. 06, 1938	P.A. Abe	Surface Hardening Lathe Bed
	2,157,948	May 09, 1939	H.H. Beeny	Hardening of Metal Surfaces
	2,245,273	Jun. 10, 1941	A.L. Hartley	Method of Flame Hardening Lathe Beds

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