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| Patents Granted on 1826-11-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,580X | Nov. 20, 1826 | S. Caldwell | Set auger for boring hubs of wheels | wheelwright | |
| 4,581X | Nov. 20, 1826 | W. Church | Construction of furnaces for anthracite coal | household tools | |