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| Patents Granted on 1846-03-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,393 | Mar. 07, 1846 | G. Sweney | Sawmill head-block | sawmill headblocks | |
| 4,395 | Mar. 07, 1846 | R.S. Morison, B.B. Cushing | Sawmill | sawmills | |