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| All Patents in class 123/41.74 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 379,807 | Mar. 20, 1888 | J. Noble | Gas Engine | ||
 | 1,229,569 | Jun. 12, 1917 | B.F. Augustine | Rotary Engine | |
 | 1,231,572 | Jul. 03, 1917 | F.M. Davis | Valve mechanism | |
| 1,791,572 | Feb. 10, 1931 | I. Ornberg | Cooling System for Internal Combustion Engines | ||
| 1,836,189 | Dec. 15, 1931 | C.D. Salisbury | Internal Combustion Engine Construction | ||
| 2,334,146 | Nov. 09, 1943 | D.P. Davies | Turbulence Cylinder Head | ||