| All Patents in class 123/2 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 88,767 | Apr. 13, 1869 | J.B. Atwater | Motive Power | hot air engines |
| 269,146 | Dec. 12, 1882 | H. Wiedling | Gas Engine | gas and gasoline engines |
| 278,168 | May 22, 1883 | L.H. Nash | Combined Gas Engine and Air Compressor | gas and gasoline engines |
| 278,600 | May 29, 1883 | J. Robson | Gas Engine | gas and gasoline engines |
| 284,061 | Aug. 28, 1883 | G.H. Reynolds | Gas Engine | gas and gasoline engines |
| 314,727 | Mar. 31, 1885 | A.W. Schleicher | Combined Gas Engine and Pump | gas and gasoline engines |
| 335,564 | Feb. 09, 1886 | J. Charter | Gas Engine | gas and gasoline engines |
| 548,772 | Oct. 29, 1895 | J.R. Bridges | Explosive Gas Engine | gas and gasoline engines |
| 597,921 | Jan. 25, 1898 | E.D. Strong | Explosive Engine | oil engines |
| 610,004 | Aug. 30, 1898 | A.H. Dingman | Gas Engine | gas and gasoline engines |
| 1,136,488 | Apr. 20, 1915 | C.E. Sargent | Gas Driven Air Compressor | gas and gasoline engines |
| 1,843,162 | Feb. 02, 1932 | A.C. Boock, C.B. Jahnke | Power Plant | power plants |
