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All Patents in class 125/11.19
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,120,198	Jun. 07, 1938	R.G. Anderson, J.Y. Blazek	Valve grinder
	2,144,095	Jan. 17, 1939	K. Zwick	Cutter grinding machine
	2,209,071	Jul. 23, 1940	E.J. Bullard	Grinding and Lapping Machine

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