| All Patents in class 123/90.31 |
Patents 1 -
10
of 19
      |
| Picture | Number | Date | Patentee | Title |
| | 311,214 | Jan. 27, 1885 | G.M. Ward | Gas Motor |
| | 444,031 | Jan. 06, 1891 | G.J. Weber | Gas Engine and Igniter Therefore |
| | 517,890 | Apr. 10, 1894 | W. Seck | Gas or Hydrocarbon Engine |
| | 534,354 | Feb. 19, 1895 | G.J. Weber | Gas Engine |
 | 571,498 | Nov. 17, 1896 | E. Rappe | Gas Engine |
| | 573,174 | Dec. 15, 1896 | S.M. Balzer | Motor or Engine |
| | 600,675 | Mar. 15, 1898 | J. Lizotte | Gas Engine |
 | 627,219 | Jun. 20, 1899 | E.J. Woolf | Air and Gas Engine |
| | 631,224 | Aug. 15, 1899 | R. Nuttall, Sr., R. Nuttall, Jr. | Gas Engine |
| | 632,859 | Sep. 12, 1899 | J. Walrath | Explosive Engine |
