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| Patents Granted on 1832-01-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,904X | Jan. 20, 1832 | T. Holloway | Gudgeon for wing valve | ||
| 6,905X | Jan. 20, 1832 | T. Holloway | Sliding valve for steam engine | steam engine valves | |
| 6,906X | Jan. 20, 1832 | T. Holloway | Valve of the vibratory steam engine | steam engine valves | |