| All Patents in class 123/74AA |
Patents 1 -
10
of 26
      |
| Picture | Number | Date | Patentee | Title |
 | 125,166 | Apr. 02, 1872 | G.B. Brayton | Improvement in Gas Engines |
| | 220,174 | Sep. 30, 1879 | J. Robson | Gas-Engine |
| | 243,795 | Jul. 05, 1881 | J. Robson | Gas Engine |
 | 270,202 | Jan. 09, 1883 | J. Charter | Gas Engine |
| | 290,310 | Dec. 18, 1883 | C.W. Baldwin | Gas Engine |
| | 325,377 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine |
| | 325,378 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine |
| | 325,379 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine |
| | 325,380 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine |
| | 346,687 | Aug. 03, 1886 | H. Robinson | Gas Motor Engine |
