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| Patents for Nicholas J. Roosevelt | |||||
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| Number | Date | Patentee | Title | Type | |
| 210X | May 31, 1798 | N.J. Roosevelt, J. Smallman | Double Steam Engine | steam engines | |
| 2,230X | Dec. 01, 1814 | N.J. Roosevelt | Propelling boats, etc. by steam | steamboats | |