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| Patents for L. B. Swartwout | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 250,174 | Nov. 29, 1881 | W.B. Swartwout | Lumber-trimming machine | |
 | 279,040 | Jun. 05, 1883 | W.B. Swartwout | Lumber-trimming machine | |
 | 289,169 | Nov. 27, 1883 | L.B. Swartwout | Water-wheel | |
 | 307,881 | Nov. 11, 1884 | L.B. Swartwout | Turbine wheel | |