216260 ⎘
Spark gaps specially adapted for generating oscillations
DRUM ASSEMBLY HAVING INTERNAL LIGHTNING DISCHARGE CAPABILITY
#2Compact electromagnetic plasma ignition device
#3Compact electromagnetic plasma ignition device
#4Power receiver for extracting power from electric field energy in the earth
#5Compact electromagnetic plasma ignition device
#6Microwave generator
#7Microwave generator
#8Microwave generator with variable frequency emission