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Patents for P. D. Kerner
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,013,980	Jan. 09, 1912	O.C. Wysong	Belt sandpapering-machine
	1,082,670	Dec. 30, 1913	O.C. Wysong	Method of polishing curved surfaces

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