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| All Patents in class 99/517 | |||||
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| Number | Date | Patentee | Title | Type | |
| 246,274 | Aug. 23, 1881 | R.S. Jennings | Method of and Apparatus for Collecting the Aromatic and Volatile Substances From | roasting coffee | |
| 255,477 | Mar. 28, 1882 | L.A. Ullrich | Apparatus for Cooling Roasted Coffee | coffee roasters | |
| 512,819 | Jan. 16, 1894 | C.A. Hege | Machine for hulling coffee or for other purposes | clover hullers | |