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| Patents Granted on 1823-05-09 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,696X | May 09, 1823 | F. Waterman, III | Mode of propelling boats by a step wheel | nautical propulsion apparatus | |
| 3,697X | May 09, 1823 | T. Ewbank | Tin plated lead pipes for stills | distilling apparatus | |