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| All Patents in class 366/300 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,394X | Feb. 12, 1836 | J.E. Thomas | Churn | churns | |
| 79,773 | Jul. 07, 1868 | P. Penington | Churn | churns | |
| 359,155 | Mar. 08, 1887 | F.A. Huntington | Amalgamator | ore processing apparatus | |
| 872,072 | Nov. 26, 1907 | F.J. Lyman | Spark Destroyer for Smoke Stacks | traction engine spark arresters | |