All Patents in class 173/31


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All Patents in class 173/31
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	47,727	May 16, 1865	W.S. Hunter, S.R. Hunter	Boring Artesian Wells
	543,625	Jul. 30, 1895	R.H. Henderson, J.G. Henderson	Machine for Boring Joists for Electric Wiring
	1,276,167	Aug. 20, 1918	S.K. Brown	Surface Finishing Machine
	2,423,821	Jul. 15, 1947	E.P. Anstett	Flooring nailer