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| All Patents in class 34/169 | |||||
| Number | Date | Patentee | Title | Type | |
| 100,212 | Feb. 22, 1870 | B.F. Sturtevant | Grain Dryer | grain dryers | |
| 100,235 | Feb. 22, 1870 | B.F. Sturtevant | Grain Dryer | grain dryers | |