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| All Patents in class 409/74 | |||||
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| Number | Date | Patentee | Title | Type | |
| 230,825 | Aug. 03, 1880 | I.S. Schuyler | Machine for Cutting Screw Threads | metal threading machines | |
| 471,194 | Mar. 22, 1892 | C. Rosine | Automatic Screw Cutting Machine | screw machines | |
| 1,613,577 | Jan. 04, 1927 | J.C. Fletcher | Die Cutting Machine | ||
| 2,382,662 | Aug. 14, 1945 | A.J. Prance | Thread milling machine | tapping machines | |
| 2,596,723 | May 13, 1952 | H.H. Ranney | Thread-cutting Mechanism | metalworking machine mechanisms | |