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| All Patents in class 99/575 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 198X | Jan. 08, 1798 | T. Bruff, Sr. | Coffee Grinding | ||
| 4,504X | Jul. 31, 1826 | J. Webster | Machine for grinding shelled corn | ||
 | 4,877X | Sep. 13, 1827 | W. Torrey | Cast iron mill for grinding bark | |
 | 5,049X | Mar. 27, 1828 | A. Bull | Machine for grinding bark | |
| 5,381X | Mar. 03, 1829 | S. Cook | Trumpet mouthed mill for grinding paints | ||
| 8,586X | Jan. 13, 1835 | I. Adams | Machine for breaking coffee berries | ||