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| All Patents in class 175/171 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,212X | Nov. 01, 1830 | L. Disbrow | Boring earth for water | trade specific | |
| 47,727 | May 16, 1865 | W.S. Hunter, S.R. Hunter | Boring Artesian Wells | well drilling machines | |