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| Patents Granted on 1819-12-31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,157X | Dec. 31, 1819 | W. Baker | Double forcing pump | pumps | |
| 3,158X | Dec. 31, 1819 | J.H. Simmons, J.H. Pierson | Weaving | weaver | |
| 3,159X | Dec. 31, 1819 | R. Graves | Gauge plate for making readies for cordage and ropes | rope maker | |