| All Patents in class 123/90.39 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 253,709 | Feb. 14, 1882 | R. Hutchinson | Gas Engine |
| | 514,359 | Feb. 06, 1894 | W.W. Grant | Vapor Gas Engine |
| | 530,508 | Dec. 11, 1894 | H.T. Dawson | Gas Engine |
| | 536,090 | Mar. 19, 1895 | J. Kosakoff, V. List | Petroleum or Oil Engine |
 | 569,564 | Oct. 13, 1896 | F.C. Olin | Gas Engine |
 | 585,115 | Jun. 22, 1897 | C.A. Miller | Gas Engine |
| | 659,027 | Oct. 02, 1900 | W.S. Halsey | Gas Engine |
| | 816,047 | Mar. 27, 1906 | S. Byron, C.M. Smith | Valve Mechanism for Gas Engines |
 | 818,714 | Apr. 24, 1906 | H.J. Smith | Valve Mechanism for Gas Engines |
