| All Patents in class 123/158 |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 655,406 | Aug. 07, 1900 | J.G. MacPherson | Electric Sparker for Gasolene-Engines | ignition systems |
| 659,944 | Oct. 16, 1900 | H.D. Weed | Gas Engine | gas and gasoline engines |
| 698,405 | Apr. 22, 1902 | J.W. Lambert | Speed Regulator for Explosive Engines | ignition systems |
| 731,134 | Jun. 16, 1903 | C.E. Sargent | Electrical Igniter for Explosive Engines | ignition systems |
| 783,983 | Feb. 28, 1905 | C.E. Sargent | Gas Engine | gas and gasoline engines |
| 827,904 | Aug. 07, 1906 | J. Boyle | Igniter for explosive-engines | ignition systems |
| 878,412 | Feb. 04, 1908 | E.R. Moffitt | Electric sparking device for gas engines | gas and gasoline engines |
| 1,441,681 | Jan. 09, 1923 | W.C. Heath | Protected Electrode Igniter | ignition apparatus |
