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| Patents for William Hopkins | |||||
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| Picture | Number | Date | Patentee | Title | |
| 449X | May 13, 1803 | W. Hopkins | Ship building | ||
| 3,667X | Mar. 06, 1823 | W. Hopkins | Machine for cleaning cotton, or cotton whipper | ||
| 144,788 | Nov. 18, 1873 | W. Hopkins, G.G. Picking | Steam-Cylinders and Piston-Valves | ||