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| All Patents in class 426/594 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,316X | Jan. 13, 1836 | I. Adams | Hulling Coffee Berry | clover hullers | |
| 312,516 | Feb. 17, 1885 | A. Schilling | Roasted Coffee Berries | roasting coffee | |
| 645,535 | Mar. 13, 1900 | F. Linde | Process of Roasting Malt with Coffee | roasting coffee | |