| All Patents in class 173/36 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 354,085 | Dec. 14, 1886 | R.J. Baker | Drill Stock | ratchet drills |
| 369,120 | Aug. 30, 1887 | J. Moffet | Portable drilling-machine | portable metal boring and drilling machines |
| 962,717 | Jun. 28, 1910 | V.J. O'Brien | Valve for Hammer Drills | pneumatic tools |
| 1,178,892 | Apr. 11, 1916 | D.S. Waugh | Rock Drill | |
| 2,349,033 | May 16, 1944 | N.R. Elliott | Boring Head | pipe and orifice cleaners |
| 2,914,031 | Nov. 24, 1959 | G.H. Fuehrer | Telescopic feed leg assembly | |
| 3,203,489 | Aug. 31, 1965 | G.H. Fuehrer | Sinker drill | |
