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Patents for Ozra Burr Osborn
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	416,801	Dec. 10, 1889	O.B. Osborn, E.G. Richards	Wood-polishing machine
	993,398	May 30, 1911	O.B. Osborn	Adjusting and grinding planer-knives

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