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| All Patents in class 200/19.39 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 430,038 | Jun. 10, 1890 | S. Priestman, W.D. Priestman | Means for Facilitating the Starting and Regulating the Working of Hydrocarbon Engines | ||
| 649,441 | May 15, 1900 | C.E. Duryea | Sparking Igniter for Explosive-Engines | ||