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| Patents Granted on 1849-11-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| AI91 | Nov. 20, 1849 | J.D. Willoughby | Seed planter | crop planters | |
| 6,891 | Nov. 20, 1849 | T. Dugard | Curvilinear sawmill | sawmills | |