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| Patents for Dudley L. Farnam | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,660X | Feb. 19, 1823 | D.L. Farnam | Rotary steam engine | rotary steam engines | |
| 7,981X | Jan. 24, 1834 | D.L. Farnam | Pumps | pumps | |