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| All Patents in class 554/9 | |||||
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| Number | Date | Patentee | Title | Type | |
| 308,112 | Nov. 18, 1884 | J.H. Vaile | Process of and apparatus for cooking oil-meal | agricultural | |
| 1,433,746 | Oct. 31, 1922 | O. Sheppard, Jr. | Cottonseed-meal cooker | seed or nut oil apparatus | |