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| All Patents in class 173/39 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,951 | Dec. 05, 1848 | L.R. Bailey, J.T. Foster | Rock-Driller | stonemason | |
| 396,018 | Jan. 08, 1889 | C.M. Woolworth | Drilling-machine | portable metal boring and drilling machines | |
| 1,279,532 | Sep. 24, 1918 | G.H. Gilman | Drilling Apparatus | ||