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| All Patents in class 403/358 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 368,744 | Aug. 23, 1887 | W.N. Woodruff | Shaft-key | |
 | 1,566,849 | Dec. 22, 1925 | W.R. Fox | Coupling for flexible shafting | |
| 2,332,684 | Oct. 26, 1943 | J.B. Armitage | Adjusting and Locking Device | ||