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| Patents for unknown unknown | |||||
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| Number | Date | Patentee | Title | Type | |
| 55 | Oct. 15, 1836 | u. unknown | Missing | ||
| 58 | Oct. 19, 1836 | u. unknown | Missing | ||
| 59 | Oct. 19, 1836 | u. unknown | Missing | ||
| 63 | Oct. 20, 1836 | u. unknown | Missing | ||