| All Patents in class 123/311 |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
| | 402,363 | Apr. 30, 1889 | H. Tenting | Gas Engine |
| | 418,112 | Dec. 24, 1889 | G. Daimler | Gas or Petroleum Motor |
 | 453,071 | May 26, 1891 | I.F. Allman | Gas Engine |
| | 497,689 | May 16, 1893 | H. Schumm | Gas or Motor Engine |
 | 527,635 | Oct. 16, 1894 | H. Voll | Gas Engine |
| | 568,814 | Oct. 06, 1896 | G.A. Thode | Gas Engine |
| | 583,872 | Jun. 01, 1897 | J.H. Tuffs | Gas Engine |
 | 585,504 | Jun. 29, 1897 | L.S. Brown | Gas Engine |
| | 637,975 | Nov. 28, 1899 | E. Rappe | Gas Engine |
| | 651,237 | Jun. 05, 1900 | H. Crouan | Gas or Petroleum Engine |
