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| All Patents in class 411/389 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 188,668 | Mar. 20, 1877 | J. Pleukharp | Improvement in screws | |
 | 313,193 | Mar. 03, 1885 | E.L. Gaylord | Device for Locking Joints | |
 | 1,662,094 | Mar. 13, 1928 | E.J. Wesp | Adjustable bearing | |