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| Patents Granted on 1842-02-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,457 | Feb. 12, 1842 | A. Kinney | Machine for cutting shingles | shingle machines | |
| 2,459 | Feb. 12, 1842 | W. Murray, J. Murray | Machine for breaking and grinding corn and corncobs | corn grinders | |