Center electrode structure for spark plug
Central electrode for spark plugs having an interlayer between t
Ceramic electrode and ignition device therewith
Ceramic electrode, ignition device therewith and methods of...
Chromate film-containing plug metal component and method for...
Combination igniter and sensor for an internal combustion...
Combustion initiators employing reduced work function stainless
Compact structure of spark plug designed to ensure desired...
Copper core side electrode spark plug shell
Copper core side wire to carbon steel shell weld and method...
Creeping discharge spark plug
Current peaking sparkplug