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| Patents Granted on 1800-02-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 268X | Feb. 04, 1800 | S. Gorham | Machine for Spinning Rope, Yarn and Twine | rope maker | |
| 269X | Feb. 04, 1800 | S. Constant | Composition to Preserve Wood, Brick, &c. | preserving wood | |
| 270X | Feb. 04, 1800 | J.G. Gebhard | Extracting Oil From Palma Christi | purifying oil | |