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| All Patents in class 403/317 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 890,894 | Jun. 16, 1908 | G.W. Leonard, W.H. Ehrhart | Bit-Extender | |
 | 1,741,969 | Dec. 31, 1929 | W.S. Bellows | Detachable Connection for Wrench Sockets and the Like | |
| 2,289,583 | Jul. 14, 1942 | F.J. Malone | Tool Holder | ||
 | 3,734,515 | May 22, 1973 | E.C. Dudek | Pneumatic impact wrench | |