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| Patents Granted on 1849-12-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,916 | Dec. 04, 1849 | W. Andrew, S.A. Bantz | Mill for grinding bark | bark processing machines | |
| 6,927 | Dec. 04, 1849 | A. Stiven | Improvement in pumps for raising water | rotary pumps | |