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| Patents for Joseph Woodhull | |||||
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| Picture | Number | Date | Patentee | Title | |
| 4,574X | Nov. 14, 1826 | J. Woodhull | Machine for spinning and reeling wool | ||
| 4,961X | Jan. 16, 1828 | D. McKensie, R. McKay, J. Woodhull | Manufacturing artificial stone | ||
| 5,320X | Dec. 31, 1828 | J. Woodhull | Zig zag screw in lieu of the crank | ||
| 5,437X | Apr. 06, 1829 | J. Woodhull | Double Rack and Twin Wheels Applied to Steam Engines | ||
| 6,518X | Apr. 25, 1831 | J. Woodhull, O. Dean | Thrashing machine | ||