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| Patents Granted on 1829-04-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,438X | Apr. 07, 1829 | E.V. Freeman, H.B. Chew | Composition to Be Used in the Fusion, Refining, or Working of Metals or Ores | refining ores | |
| 5,439X | Apr. 07, 1829 | G. Brown | Reciprocating sawmill | sawmills | |
| 5,440X | Apr. 07, 1829 | M.F. Colburn | Propelling Carriages, Mills, Etc by Weights | human powered apparatus | |