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| Patents Granted on 1833-02-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,427X | Feb. 15, 1833 | E. Hale | Stereotype block | printer | |
| 7,428X | Feb. 15, 1833 | R.C. Manners | Lithography applied to reprinted books | printer | |