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| All Patents in class 19/39 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,358X | Feb. 05, 1836 | W. McCreight, J. McCreight | Cotton gin | cotton gins | |
| 9,471X | Mar. 04, 1836 | E. Keith | Cotton gin grates | cotton gins | |
| 2,200,379 | May 14, 1940 | R.D. Williams | Utilization of Waste Engine Heat | exhaust mechanisms | |