Solid state magnetron

Solid state sound lamp

Spark gap apparatus triggerable by microwave pulse

Spark ignition system and spark plug for ultra lean fuel/air mix

Spark plug

Spark plug

Spark plug

Spark plug

Spark plug

Spark plug cap

Spark plug cap providing a capacitor in parallel with the spark

Spark plug connector having transformer, capacitor, and spark ga

Spark plug construction

Spark plug for an internal combustion engine, having a pilot bre

Spark plug for externally ignited internal combustion engine

Spark plug having a low noise level

Spark plug with capacitor spark discharge

Spark plug with combustion pressure switches

Sphericon

Spin tuned magnetron having load sharing bearing arrangements