A method of manufacturing a spark gap device. The method includes using standard metal transistor base and cap components, machining the base to cut out a portion of the top of the base, filling the base with an insulative substrate and placing a pin through the insulative substrate, depositing a first...http://www.google.fr/patents/US5864208?utm_source=gb-gplus-shareBrevet US5864208 - Spark gap device and method of manufacturing same