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| All Patents in class 470/72 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 76,612 | Apr. 14, 1868 | C. Ellis | Improvement in Screw-Cutting Lathes | |
 | 170,949 | Dec. 14, 1875 | J.J. Grant | Improvement in screw-cutting die holders | |
 | 288,188 | Nov. 06, 1883 | A.J. Smart | Screw-cutting machines | |
| 411,002 | Sep. 17, 1889 | J.A. Becher | Bolt Threading Machine | ||