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| All Patents in class 99/622 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 198X | Jan. 08, 1798 | T. Bruff, Sr. | Coffee Grinding | ||
| 7,556X | Apr. 26, 1833 | T.F. Strong, M.J. Moody | Hulling, cleaning, and polishing rice, barley, etc. | ||
| 8,586X | Jan. 13, 1835 | I. Adams | Machine for breaking coffee berries | ||