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| All Patents in class 123/284 | |||||
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| Number | Date | Patentee | Title | Type | |
| 473,685 | Apr. 26, 1892 | C.W. Weiss | Gas Engine | gas and gasoline engines | |
| 1,096,585 | May 12, 1914 | C.B. Jahnke, L. Yost | Divided-Spray Injection-Engine | vaporizers | |