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Patents for O. C. Billman
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	677,339	Jul. 02, 1901	E.M. Comstock	Center Punch and Gage
	955,623	Apr. 19, 1910	W.H. Welch	Power Hammer
	1,316,961	Sep. 23, 1919	D. Lambert	Machine-tool

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