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| Patents Granted on 1808-03-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 823X | Mar. 04, 1808 | D. Watson | Common suction pump | plumber | |
| 824X | Mar. 04, 1808 | P. Heaton, M.B. Boyes, P. Heaton, Jr. | Mode of propelling boats | nautical propulsion apparatus | |
| 825X | Mar. 04, 1808 | N. Cutting, R. Fulton | Mode of manufacturing cordage | rope maker | |