| All Patents in class 123/298 |
Patents 1 -
10
of 23
      |
| Picture | Number | Date | Patentee | Title |
| | 335,629 | Feb. 09, 1886 | A.K. Rider | Hydrocarbon Vapor Engine |
 | 349,369 | Sep. 21, 1886 | J. Spiel | Petroleum and Gas Engine |
| | 425,116 | Apr. 08, 1890 | A.T. Griggs, J.R. Valentine | Gas Engine |
| | 433,807 | Aug. 05, 1890 | N.A. Otto | Motor Engine Worked by Oil Vapor |
| | 514,271 | Feb. 06, 1894 | H. Pokony | Gas Engine |
| | 532,100 | Jan. 08, 1895 | J. Robison | Vaporizing and Ignition Device |
| | 575,812 | Jan. 26, 1897 | F.C. Southwell | Explosive Engine |
| | 579,068 | Mar. 16, 1897 | E. Merry | Hydrocarbon Engine |
| | 582,073 | May 04, 1897 | F.S. Mead | Gas or Oil Engine |
 | 592,034 | Oct. 19, 1897 | C.W. Weiss | Explosive Engine |
