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| Patents Granted on 1801-07-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 331X | Jul. 16, 1801 | C.W. Peale | Portable vapor bath | medical devices | |
| 332X | Jul. 16, 1801 | H. Guest | Mode of Infusing Oil into Leather | leatherworker | |
| 333X | Jul. 17, 1801 | J. Ladd | Beaming Machine | sawmills | |
| 334X | Jul. 23, 1801 | C. Green | Mill for Grinding Painters' Colors etc. | paint grinding mills | |