| All Patents in class 123/74B |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 151,468 | Jun. 02, 1874 | G.B. Brayton | Gas Engines |
| | 286,030 | Oct. 02, 1883 | S. Marcus | Gas Engine |
| | 306,339 | Oct. 07, 1884 | S. Marcus | Electrical Igniting Device for Gas Engines |
| | 434,171 | Aug. 12, 1890 | C.W. Baldwin | Gas Engine |
| | 570,649 | Nov. 03, 1896 | R.J. Rolfson | Gas Engine |
| | 588,061 | Aug. 10, 1897 | H.C. Hart | Gas Engine |
| | 603,297 | May 03, 1898 | W.F. Trotter | Oil or Gas Engine |
| | 648,914 | May 08, 1900 | H.A. Bertheau | Vaporizer for Petroleum-Motors |
| | 650,789 | May 29, 1900 | J.S. Losch | Gas Engine |
| | 655,186 | Aug. 07, 1900 | H.A. Bertheau | Rear-Compression Explosive-Engine |
