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| Patents for Samuel Hopkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 1X | Jul. 31, 1790 | S. Hopkins | Making Pot And Pearl Ashes | manufacturing potash | |
| 1,985X | Aug. 19, 1813 | S. Hopkins | Preparation of flour of mustard | ||
| 2,797X | May 31, 1817 | S. Hopkins | Preparation of the flour of mustard | ||