| All Patents in class 123/74AA |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 125,166 | Apr. 02, 1872 | G.B. Brayton | Improvement in Gas Engines | gas and gasoline engines |
| 220,174 | Sep. 30, 1879 | J. Robson | Gas-Engine | gas and gasoline engines |
| 243,795 | Jul. 05, 1881 | J. Robson | Gas Engine | gas and gasoline engines |
| 270,202 | Jan. 09, 1883 | J. Charter | Gas Engine | gas and gasoline engines |
| 290,310 | Dec. 18, 1883 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 325,377 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 325,378 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 325,379 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 325,380 | Sep. 01, 1885 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 346,687 | Aug. 03, 1886 | H. Robinson | Gas Motor Engine | gas and gasoline engines |
| 368,444 | Aug. 16, 1887 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 368,445 | Aug. 16, 1887 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 407,320 | Jul. 23, 1889 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 407,321 | Jul. 23, 1889 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
| 408,683 | Aug. 13, 1889 | C.W. Baldwin | Gas Engine | gas and gasoline engines |
