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| All Patents in class 123/286 | |||||
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| Number | Date | Patentee | Title | Type | |
| 337,000 | Mar. 02, 1886 | J.P. Holland | Hydrocarbon Engine | gas and gasoline engines | |
| 1,022,178 | Apr. 02, 1912 | B. Brazelle | Internal-combustion motor | gas and gasoline engines | |
| 1,334,376 | Mar. 23, 1920 | R.M. Hvid | Oil Burning Engine | oil engines | |
| 1,337,771 | Apr. 20, 1920 | C.B. Jahnke, F.G. Hobart | Oil Engine | oil engines | |
| 1,437,738 | Dec. 05, 1922 | C.E. Sargent | Engine | oil engines | |