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| Patents Granted on 1812-04-27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,714X | Apr. 27, 1812 | S. Tredwell | Shearing machine | splitting and shearing machinery | |
| 1,715X | Apr. 27, 1812 | S. Shepard | Water loom | looms | |
| 1,716X | Apr. 27, 1812 | J. Carrington | Machine for cutting scale board | specialty woodworking machines | |
| 1,717X | Apr. 27, 1812 | J. Green | Refining and making camphire | ||
| 1,718X | Apr. 27, 1812 | B. Allison | Portable spinning machine | spinner | |
| 1,719X | Apr. 27, 1812 | J. Shaw | Spinning wheel | spinner | |