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| Patents Granted on 1801-02-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 317X | Feb. 20, 1801 | M. Garber | Machine for making and heading nails | nail making machines | |
| 318X | Feb. 20, 1801 | B. Langdon | Hydraulic machine for raising water | elevators and lifts | |
| 319X | Feb. 20, 1801 | D. Grieve | Improvement in boats to ascend rivers | boats and ships | |