| All Patents in class 123/54.4 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 353,402 | Nov. 30, 1886 | J.H. Clark | Reversible Gas Engine | gas and gasoline engines |
| 418,112 | Dec. 24, 1889 | G. Daimler | Gas or Petroleum Motor | |
| 625,416 | May 23, 1899 | L.L. Revel | Carbureted Air or Other Fluid Pressure Engine | gas and gasoline engines |
| 1,078,919 | Nov. 18, 1913 | E.J. Hall | Internal-combustion engine | internal combustion engines |
| 1,102,700 | Jul. 07, 1914 | W. Spacke, D.T. Brownlee, F.W. Spacke | Internal-Combustion Engine | internal combustion engine valves |
| D131,706 | Mar. 24, 1942 | H. Schreck | Twin Cylinder V-Type Engine | internal combustion engines |
