| All Patents in class 123/90.31 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 311,214 | Jan. 27, 1885 | G.M. Ward | Gas Motor | gas and gasoline engines |
| 444,031 | Jan. 06, 1891 | G.J. Weber | Gas Engine and Igniter Therefore | ignition systems |
| 517,890 | Apr. 10, 1894 | W. Seck | Gas or Hydrocarbon Engine | internal combustion engines |
| 534,354 | Feb. 19, 1895 | G.J. Weber | Gas Engine | gas and gasoline engines |
| 571,498 | Nov. 17, 1896 | E. Rappe | Gas Engine | gas and gasoline engines |
| 573,174 | Dec. 15, 1896 | S.M. Balzer | Motor or Engine | |
| 600,675 | Mar. 15, 1898 | J. Lizotte | Gas Engine | gas and gasoline engines |
| 627,219 | Jun. 20, 1899 | E.J. Woolf | Air and Gas Engine | gas and gasoline engines |
| 631,224 | Aug. 15, 1899 | R. Nuttall, Jr., R. Nuttall, Sr. | Gas Engine | gas and gasoline engines |
| 632,859 | Sep. 12, 1899 | J. Walrath | Explosive Engine | gas and gasoline engines |
| 634,207 | Oct. 03, 1899 | J.B. Fenner | Mechanical Movement for Gas Engines Valves, &c. | internal combustion engine valves |
| 663,106 | Dec. 04, 1900 | H.W. Struss | Explosion Engine | internal combustion engines |
| 664,632 | Dec. 25, 1900 | W.K. Freeman | Internal Combustion Engine | internal combustion engines |
| 669,272 | Mar. 05, 1901 | J. Walrath | Gas Engine | gas and gasoline engines |
| 714,853 | Dec. 02, 1902 | B.A. Williams, F.G. Bates | Gas or Vapor Engine | internal combustion engines |
