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| All Patents in class 19/51 | |||||
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| Number | Date | Patentee | Title | Type | |
| 16,565 | Feb. 03, 1857 | L.S. Chichester | Improvement in cotton-gins | cotton gins | |
| 23,679 | Apr. 19, 1859 | E. Gottheil | Cotton Gin | cotton gins | |