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