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| All Patents in class 99/526 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,482X | Mar. 08, 1836 | M.B. Spafford | Smut machine | smut mills | |
| 3,610 | Jun. 05, 1844 | T.H. Wilson, E.W. Young | Smut Machine | smut mills | |
| 39,146 | Jul. 07, 1863 | D.W. Harshbarger | Hulling Machine | grain hullers | |
| 79,791 | Jul. 07, 1868 | R. Ward | Smut Mill | smut mills | |
| 680,588 | Aug. 13, 1901 | C.A. Hege | Machine for hulling coffee, &c. | clover hullers | |