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All Patents in class 175/62
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
1,285,712	Nov. 26, 1918	H.R. Hughes	Horizontal Drilling Machine
2,349,033	May 16, 1944	N.R. Elliott	Boring Head	pipe and orifice cleaners
2,707,616	May 03, 1955	R.J. Koch, R.P. Schad	Boring Head for Horizontal Drills in Water Collecting Devices	well digging or drilling tools

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