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| Patents Granted on 1817-04-03 | |||||
| Number | Date | Patentee | Title | Type | |
| 2,768X | Apr. 03, 1817 | T. Burr | Improvement on Rumsey and McComb's water wheel | water wheels | |
| 2,769X | Apr. 03, 1817 | T. Burr | Truss Bridge | truss bridges | |