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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, etc. | carpenter | |
| 270X | Feb. 04, 1800 | J.G. Gebhard | Extracting oil from palma christi | purifying oil | |