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| Patents Granted on 1833-03-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,480X | Mar. 12, 1833 | J. Gans | Clover seed machine for hulling | clover hullers | |
| 7,481X | Mar. 12, 1833 | M. Horatio | Cans for manufacturing cotton, flax, etc. | cloth carding machines | |
| 7,482X | Mar. 12, 1833 | R. Walker | Water wheel and applying water thereto | water wheels | |