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All Patents in class 209/218
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	2,221,918	Nov. 19, 1940	E.A. Hall, K.R. Bohn	Valve Grinding Machine
	2,642,994	Jun. 23, 1953	K.H. Casson	Apparatus for handling magnetic material

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