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| Patents Granted on 1831-11-16 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,841X | Nov. 16, 1831 | P. Shaffer | Thrashing machine | threshers and thrashers | |
| 6,842X | Nov. 16, 1831 | L. Wernwag | Self directing railroad car | ||