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Patents for Quimby S. Backus
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	48,763	Jul. 11, 1865	W.W. Draper	Improved tool-stock
	132,790	Nov. 05, 1872	Q.S. Backus	Improvement in bit-stocks
	132,791	Nov. 05, 1872	Q.S. Backus	Improvement in bit-braces
	225,682	Mar. 23, 1880	S.A. Bostwick	Combined drill and bit-stock

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