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| Patents Granted on 1812-04-25 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,710X | Apr. 25, 1812 | J. Evelett | Propelling boats by steam called the setting float steam boat | steamboats | |
| 1,711X | Apr. 25, 1812 | C. Jenks | Quilted clothing for a copper still head | ||
| 1,712X | Apr. 25, 1812 | C. Jenks | Wooden still head | ||
| 1,713X | Apr. 25, 1812 | E. Mix | Fire places for warming rooms by means of a cast iron fluted backFire Places for Warming Rooms by Means of a Cast Iron Fluted Back | fireplaces | |