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| Patents Granted on 1826-06-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,477X | Jun. 21, 1826 | E. Nott | Relation to the evolution of heat | furnaces | |
| 4,478X | Jun. 21, 1826 | A. Brownson | Machine for shaving and smoothing wood | wood planers | |