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All Patents in class 279/44
Patents 31 - 32 of 32
Number	Date	Patentee	Title	Type
2,147,227	Feb. 14, 1939	G.B. Ambler	Drill sharpening machine	drill sharpening machines
3,185,492	May 25, 1965	H.R. Dziedzic	Tool Holding Means	metalworking machine mechanisms

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