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Patents for C. F. Washburn
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	145,488	Dec. 16, 1873	P.D. Cummings	Grinding Machines
	160,029	Feb. 23, 1875	R.H. Hasty, F.L. Pinney	Improvement in lumber-carriers

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