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| Patents for Leslie David Jannell | |||||
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| Number | Date | Patentee | Title | Type | |
| 888,888 | May 26, 1908 | L.D. Jannell | Sled for hauling logs | logging sleds | |
| 1,068,344 | Jul. 22, 1913 | L.D. Jannell | Punching and shearing machine | metal punching machines | |