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| Patents Granted on 1821-10-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,391X | Oct. 12, 1821 | L. Ruggles | Machine for cleaning rice | miller | |
| 3,392X | Oct. 12, 1821 | J. Cooke | Machine for packing cotton | cotton presses | |