| All Patents in class 123/594 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 65,808 | Jun. 18, 1867 | O. Hammel | Electric Apparatus for Lighting Gas Engines | ignition systems |
| 545,553 | Sep. 03, 1895 | H. Thau | Electric Igniting Apparatus for Gas Engines | ignition systems |
| 588,629 | Aug. 24, 1897 | L. Bly | Igniter for Explosive Engines | ignition systems |
| 593,296 | Nov. 09, 1897 | J.J. Heilmann | Oil and Gas Engine | oil engines |
| 604,241 | May 17, 1898 | D.M. Tuttle | Gas Engine | gas and gasoline engines |
| 657,662 | Sep. 11, 1900 | F.A. La Roche | Controlling Means for Explosive-Engines | gas and gasoline engines |
| 663,388 | Dec. 04, 1900 | M.S. Napier | Electric Igniter for Explosive-Engines | ignition systems |
