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| All Patents in class 407/24 | |||||
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| Number | Date | Patentee | Title | Type | |
| 867,639 | Oct. 08, 1907 | G.J. Bragg | Twist Drill | metalworking twist drills | |
| 1,586,186 | May 25, 1926 | A.W. Erdman | Milling Hob | milling machine cutters | |