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| All Patents in class 175/122 | |||||
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| Number | Date | Patentee | Title | Type | |
| 47,727 | May 16, 1865 | W.S. Hunter, S.R. Hunter | Boring Artesian Wells | well drilling machines | |
| 880,140 | Feb. 25, 1908 | B. Hastings | Drilling Machine | stone boring and drilling machines | |