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| All Patents in class 241/224 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,755X | Dec. 15, 1829 | F. Follet | Improvement in the machine (originally invented by him) for hulling or husking cotton seed, and separating the hull from the kernel | miller | |
| 6,887X | Jan. 05, 1832 | D. Stem | Stones for grist mills | miller | |
| 12,181 | Jan. 02, 1855 | A. Felton | Grinding-mill | wood grinding machines | |
| 1,978,299 | Oct. 23, 1934 | G.O. Leopold, T.J. Fegley | Tray for supporting an ice cube breaker and ice cream freezer | ||