Patents for George G. Crowell


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Patents for George G. Crowell
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	410,581	Sep. 10, 1889	G.G. Crowell	Tool for Dressing Abrasive Surfaces
	441,139	Nov. 25, 1890	G.G. Crowell	Journal-bearing for emery grinding-machines