Manufacture of bi-metal electrodes for spark plugs

Means for detecting and indicating defective spark plugs

Measuring device for current flow from a corona generator

Metal enclosed gas insulated lightning arrester

Metal-encapsulated gas-insulated high-voltage installation...

Metallized glass seal resistor composition

Metallized glass seal resistor compositions and resistor...

Method and apparatus for bipolar ion generation

Method and apparatus for charging by corona discharge

Method and apparatus for controllably generating sparks in...

Method and apparatus for evaluating the gas content of...

Method and apparatus for generating ions and controlling...

Method and apparatus for producing ions at ultrasonic...

Method and apparatus for separating dispersed matter from a...

Method and apparatus for the corona discharge treatment of...

Method and apparatus to reduce ozone production in ion wind...

Method and arrangement for triggering a series spark gap

Method and device for ion generation

Method for assembling a spark plug

Method for making insulated conductor elements for...