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Patents for Oswald A. Olsen
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,860,840	May 31, 1932	N.M. Marsilius, O.A. Olsen	Milling machine	milling machines
1,868,016	Jul. 19, 1932	N.M. Marsilius, O.A. Olsen	Milling machine	milling machines

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