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| Patents for Levi P. Gilbert | |||||
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| Number | Date | Patentee | Title | Type | |
| 149,649 | Apr. 14, 1874 | L.P. Gilbert | Improvement in log-turners for saw-mills | sawmill log handling | |
| 151,115 | May 19, 1874 | L.P. Gilbert | Improvement in saw-mill dogs | sawmill dogs | |
| 157,171 | Nov. 24, 1874 | L.P. Gilbert | Improvement in saw-mill dogs | sawmill dogs | |