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| Patents for Roger Haskell | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,051X | May 25, 1809 | R. Haskell | Straw Cutting Machine | hay or straw cutters | |
| 3,350X | Jul. 07, 1821 | R. Haskell | Navigable mercantile house | ||