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| Patents Granted on 1820-11-08 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,247X | Nov. 08, 1820 | B. Stancliff (Slaucliff), J. Cluley (Cluhy) | Improvement on the valve cock | ||
| 3,248X | Nov. 08, 1820 | S.S. Edmonston | Machine for Sweeping Chimneys | chimney sweepers | |
| 3,249X | Nov. 08, 1820 | J. Kirk | Swinging frame for for facilitating shoeing of horses | blacksmith | |