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| All Patents in class 123/59.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 625,416 | May 23, 1899 | L.L. Revel | Carbureted Air or Other Fluid Pressure Engine | gas and gasoline engines | |
| 646,993 | Apr. 10, 1900 | C.A. Scott | Explosion Engine | gas and gasoline engines | |