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| Patents Granted on 1830-03-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,891X | Mar. 29, 1830 | S. Marsh | Truss | medical devices | |
| 5,892X | Mar. 29, 1830 | J. White | Steam Generating | stationary boilers | |
| 5,893X | Mar. 29, 1830 | S.W. Williams | Manufacturing salt | manufacturing salt | |