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| All Patents in class 366/325.8 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 7,002X | Apr. 18, 1832 | H. Branch | Revolving churn dasher | ||
 | 735 | May 10, 1838 | R. Porter | Churn | |
 | 1,648 | Jun. 20, 1840 | A. Crowell, W.A. Crowell | Construction of Churns | |
| 575,983 | Jan. 26, 1897 | H.D. Perky | Coffee Roaster | ||