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| All Patents in class 19/62R | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,429X | Feb. 25, 1836 | H. Clark | Cotton gin | cotton gins | |
| 47,626 | May 09, 1865 | W.B. Emery | Improvement in cotton-gins | cotton gins | |