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| Patents for William L. Evans | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,617,621 | Feb. 15, 1927 | W.L. Evans | Device for making ring joint | ||
| 1,617,622 | Feb. 15, 1927 | W.L. Evans | Device for making ring joint | ||
 | RE17,628 | Mar. 25, 1930 | W.L. Evans | Device for making ring joint | |
 | RE17,786 | Sep. 02, 1930 | W.L. Evans | Device for making ring joint | |