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| All Patents in class 68/30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,930X | Apr. 22, 1830 | H. Thurber | Washing machine | washing machines | |
| 8,159X | Apr. 21, 1834 | P. Horney | Revolving washing machine | washing machines | |
| 9,610X | Apr. 21, 1836 | H. Souder | Washing machine | washing machines | |