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| Patents for Standfast Smith | |||||
| Number | Date | Patentee | Title | Type | |
| 697X | Jun. 12, 1806 | S. Smith | Extracting salt from sea water | ||
| 698X | Jun. 13, 1806 | S. Smith | Facilitating the process of extracting salt from sea water | ||
| 699X | Jun. 13, 1806 | S. Smith | Facilitating the process of extracting salt from sea water | ||