Patents for George R. Houghton


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Patents for George R. Houghton
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	6,000	Jan. 02, 1849	A.S. Macomber	Turning-lathe
	495,239	Apr. 11, 1893	J.R. Bate, S.H. Shadbolt, G.R. Houghton, C.B. Houghton	Machine for cutting excelsior