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All Patents in class 409/142
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	3,822,618	Jul. 09, 1974	A.A. Tomenceak	Contour Machining
	3,902,278	Sep. 02, 1975	R.E. Crossman, H.R. Uhtenwoldt	Grinding Machine for Generating an Epitrochoidal Surface

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