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| All Patents in class 173/42 | |||||
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| Number | Date | Patentee | Title | Type | |
| 249,130 | Nov. 01, 1881 | G.D. Whitcomb | Rotary mining-drill | miner | |
| 639,267 | Dec. 19, 1899 | W.T. Moss | Mining Machine | mining apparatus | |
| 1,273,733 | Jul. 23, 1918 | J.M. Calderwood | Drill Holder | ||