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| Patents Granted on 1812-04-08 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,703X | Apr. 08, 1812 | J. Eagles, J. Vanderpool | Tobacco spinning and turning off wheel | ||
| 1,704X | Apr. 08, 1812 | S. Morey | Mode of obtaining power between the difference of a column of rarified and unrarified air | ||
| 1,705X | Apr. 08, 1812 | N. Gillet, J. Smith | Boring machine | drilling and boring | |