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| All Patents in class 411/279 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 439,660 | Nov. 04, 1890 | A. Holmquist | Feed Screw and Nut for the Same | ||
| 2,332,684 | Oct. 26, 1943 | J.B. Armitage | Adjusting and Locking Device | ||