All Patents in class 173/150


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

All Patents in class 173/150
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
249,130	Nov. 01, 1881	G.D. Whitcomb	Rotary mining-drill	miner
4,062,412	Dec. 13, 1977	W.A. McIlvanie	Flexible shaft drilling system