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| Patents Granted on 1819-12-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,148X | Dec. 15, 1819 | A. Jaque, E. Hotchkiss | Cloth shearing machine | splitting and shearing machinery | |
| 3,149X | Dec. 15, 1819 | J. Hale | Churn | churns | |
| NX-181,912,151 | Dec. 15, 1819 | S. Hawes | Carpenters Square | carpenter squares | |