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| Patents for Lewis Wernwag | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,760X | Dec. 22, 1829 | L. Wernwag | Improvement in his patented bridges | bridges | |
| 6,842X | Nov. 16, 1831 | L. Wernwag | Self directing railroad car | ||