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| Patents Granted on 1830-04-19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,921X | Apr. 19, 1830 | W.A. Archbald | Manufacturing sugar from cane juice | manufacturing sugar | |
| NX-5,921 | Apr. 19, 1830 | S. Kennedy | Mouldings | molders | |
| 5,922X | Apr. 19, 1830 | W.A. Archbald | Manufacturing raw and brown sugar from the juice of the cane | manufacturing sugar | |
| 5,923X | Apr. 19, 1830 | W.A. Archbald | Manufacturing raw and brown sugar from the juice of the cane or manufacturing syrup in wooden vessels | manufacturing sugar | |