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| All Patents in class 366/296 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,003X | May 28, 1830 | I. Brewster | Churn | churns | |
| 7,238X | Oct. 25, 1832 | A.C. Carrel | Churn | churns | |
| 211,576 | Jan. 21, 1879 | C.A. Lawton, E.W. Arndt | Improvement in bran-dusters | grain hullers | |