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| All Patents in class 100/122 | |||||
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| Number | Date | Patentee | Title | Type | |
| 296,186 | Apr. 01, 1884 | W. Krutzsch | Apparatus for pressing oil-cakes | seed or nut oil apparatus | |
| 361,879 | Apr. 26, 1887 | W. Krutzsch | Meal-cake-molding box | seed or nut oil apparatus | |
| 1,755,353 | Apr. 22, 1930 | L.S. Hubbert | Filter Pot Press | liquid extracting machines | |