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| Patents Granted on 1804-10-__ | |||||
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| Number | Date | Patentee | Title | Type | |
| 577X | Oct. 02, 1804 | J.J. Thomas | Method to Prevent Chimneys From Admitting Water in Rainy Weather | chimneys | |
| 578X | Oct. 04, 1804 | A. Taylor | Pump | plumber | |
| 579X | Oct. 17, 1804 | A. Brown | Rheumatic Liniment for Chronic Rheumatism, Strains, Etc. | medical remedies | |
| 580X | Oct. 23, 1804 | S. Smith | Improvement in gallows or suspenders for breeches, pantaloons or trowsers | ||
| 581X | Oct. 29, 1804 | B. Dearborn | Improvement in candlesticks | chandler | |