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| All Patents in class 173/144 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 91,117 | Jun. 08, 1869 | N.B. Hadley | Improvement in machines for threading screws | |
 | 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 | ||
| 1,272,345 | Jul. 09, 1918 | J. Beaudry | Drilling Machine | ||