| All Patents in class 123/51AA |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 497,239 | May 09, 1893 | W.W. Grant | Gas Engine | gas and gasoline engines |
| 553,460 | Jan. 21, 1896 | W.W. Grant | Gas or Vapor Engine | |
| 574,762 | Jan. 05, 1897 | W. Rowbotham | Oil, Gas or the Like Engine | gas and gasoline engines |
| 577,160 | Feb. 16, 1897 | W. Donaldson | Gas Motor | |
| 592,073 | Oct. 19, 1897 | P. Auriol | Gas Engine | gas and gasoline engines |
| 1,286,122 | Nov. 26, 1918 | C.E. Sargent | Motor for Railroad Vehicles | internal combustion engines |
| 2,170,058 | Aug. 22, 1939 | E.T. Larkin | Internal Combustion Engine | internal combustion engines |
| 2,341,981 | Feb. 15, 1944 | H. Davids | Shaft Coupling Mechanism for Internal Combustion Engines | opposed piston engines |
