Patents for John E. Whitcomb


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Patents for John E. Whitcomb
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	167,974	Sep. 21, 1875	G.F. Ballou	Slide Rests for Metal Turning Lathes
	171,082	Dec. 14, 1875	G.F. Ballou	Chuck and Centerer