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| All Patents in class 19/61 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 72X | Mar. 14, 1794 | E. Whitney | Ginning cotton | |
| 8,257X | Jun. 14, 1834 | J. Perkins | Cotton gin | ||
| 9,885X | Jul. 02, 1836 | J. McCreight | Cotton gin | ||
 | 88,464 | Mar. 30, 1869 | H.L. Emery | Improvement in cotton-gins | |