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| Patents Granted on 1822-04-23 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,503X | Apr. 23, 1822 | E. Case | Scraper, or team shovel | scrapers | |
| 3,504X | Apr. 23, 1822 | J. Tyler, B. Tyler | Threshing machine | miller | |
| 3,505X | Apr. 23, 1822 | J. Garey | Metallic screw cock | ||
| 3,506X | Apr. 23, 1822 | S.W. Talbot, J.S. Fisher | Machine for kneading dough | ||