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| Patents for William Jannell | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,507,381 | Sep. 02, 1924 | W. Jannell | Commutator-slotting machine | electric motor making | |
| 1,537,533 | May 12, 1925 | W. Jannell | Fiber-crimping- machine | electric motor making | |
| 1,612,026 | Dec. 28, 1926 | W. Jannell | Winding machine | electric motor making | |