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| Patents Granted on 1830-11-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,251X | Nov. 17, 1830 | H. Liebenau | Casting monuments, memento plates, mantel pieces | ||
| 6,252X | Nov. 17, 1830 | J.S. Williams | Mode of supplying water for boilers for steam engines | stationary boilers | |