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| Patents for John Ravenel | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,115X | May 17, 1828 | J. Ravenel | Machine for Hulling Rice | miller | |
| 5,430X | Apr. 03, 1829 | J. Ravenel | Improvement on Roswell King's Rice Mill | miller | |
| 5,804X | Jan. 29, 1830 | J. Ravenel | Machine for cleaning rice | rice cleaners | |