| All Patents in class 313/125 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 424,027 | Mar. 25, 1890 | E.F. Roberts | Igniting Apparatus for Gas Engines | ignition systems |
| 541,773 | Jun. 25, 1895 | F.S. Mead | Gas Engine | internal combustion engines |
| 588,466 | Aug. 17, 1897 | A.G. Pace | Combustion Engine | internal combustion engines |
| RE11,775 | Sep. 26, 1899 | A.G. Pace | Combustion Engine | internal combustion engines |
| 676,468 | Jun. 18, 1901 | N. McClintock | Ignition Plug for Gas Engines | spark plugs |
| 1,401,585 | Dec. 27, 1921 | V.D. Collins, A.F. Collins | Spark Plug | spark plugs |
