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| Patents Granted on 1801-06-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 327X | Jun. 09, 1801 | S. Thayer | Impellent pump | centrifugal pumps | |
| 328X | Jun. 09, 1801 | J. Reed | Nails Milled Out of Heated Rods | nail making machines | |
| 329X | Jun. 12, 1801 | S. Downing | Extract of bark for dying | bark processing machines | |
| 330X | Jun. 13, 1801 | J. Eveleth | Forcing pump | pumps | |