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| All Patents in class 34/194 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,392X | Feb. 12, 1836 | J. Philbrick | Drying cotton | ||
| 417,014 | Dec. 10, 1889 | G. Frick, F. Frick | Drier for fruit and like articles | ||