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| All Patents in class 198/835 | |||||
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| Number | Date | Patentee | Title | Type | |
| 499,460 | Jun. 13, 1893 | F.X. Hooper | Drying apparatus | ||
| 1,431,434 | Oct. 10, 1922 | O. Tardif | Sawing machine | circular sawmills | |