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| Patents Granted on 1823-02-19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,660X | Feb. 19, 1823 | D.L. Farnam | Rotary steam engine | rotary steam engines | |
| 3,661X | Feb. 19, 1823 | M. McDonald | Distilling | ||