| All Patents in class 173/37 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 5,951 | Dec. 05, 1848 | L.R. Bailey, J.T. Foster | Rock-Driller | stonemason |
| 112,254 | Feb. 28, 1871 | S. Ingersoll | Improvement in rock-drills | mining apparatus |
| 120,279 | Oct. 24, 1871 | S. Ingersoll | Improvement in rock-drills | mining apparatus |
| 147,402 | Feb. 10, 1874 | S. Ingersoll | Improvement in rock-drills | mining apparatus |
| RE6,292 | Feb. 16, 1875 | S. Ingersoll | Improvement in machines for drilling rock | mining apparatus |
| 481,598 | Aug. 30, 1892 | W.X. Stevens | Rock-drilling machine | impact chisels and drills |
| 1,252,374 | Jan. 01, 1918 | G.H. Gilman | Drilling Machine | |
