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| Patents Granted on 1832-04-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,011X | Apr. 20, 1832 | L. Cooke | Pressing opium from the poppy plant | ||
| 7,012X | Apr. 20, 1832 | F. Morgan | Applying varnish to whip staffs | ||
| 7,013X | Apr. 20, 1832 | J. Dixon, F. Peabody | Preventing conterfeit bank notes by lithography | ||