Multi-gap spark plug for an internal combustion engine

Multi-point spark plug

Multi-polarity type spark plug for use in an internal combustion

Multi-spark inducing spark plug and associated method

Multielectrode spark plug

Multiple electrode igniter

Multiple gap spark plug for internal combustion engine

Negative electron affinity spark plug

Noble metal tip for spark plug electrode and method of...

Noble metal tip for spark plug electrode and method of...

Off center electrode spark plug

Open-chamber multi-spark plug

Performance spark plug

Plasma ceramic coating to supply uniform sparking action in comb

Plasma ignition system with recess porton in the center...

Plasma jet ignition plug

Plasma jet ignition plug with cavity in insulator discharge end

Plasma jet spark plug and manufacturing method therefor

Plasma plug

Plasma-generating plug