| All Patents in class 173/31 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 47,727 | May 16, 1865 | W.S. Hunter, S.R. Hunter | Boring Artesian Wells | well drilling machines |
| 543,625 | Jul. 30, 1895 | R.H. Henderson, J.G. Henderson | Machine for Boring Joists for Electric Wiring | portable timber borers |
| 862,653 | Aug. 06, 1907 | H.A. Pedrick, C.A. Smith | Rock Drill | stone boring and drilling machines |
| 1,276,167 | Aug. 20, 1918 | S.K. Brown | Surface Finishing Machine | |
| 2,263,423 | Nov. 18, 1941 | W.J. Kattrein | Sheet Metal Smoothing Machine | sheet metal |
| 2,423,821 | Jul. 15, 1947 | E.P. Anstett | Flooring nailer | nailing machines |
