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| All Patents in class 74/589 | |||||
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| Number | Date | Patentee | Title | Type | |
| 264,859 | Sep. 26, 1882 | J.C. Butterfield | Atmospheric hammer | drop hammers | |
| 292,525 | Jan. 29, 1884 | C.C. Worthington | Duplex pumping-engine | steam pumping engines | |
| 933,799 | Sep. 14, 1909 | I.J. Van Huffel, Jr. | Adjustable Work Holder | drill press accessories | |