DIFF Subgroup
H01J 13/405 Full Title
Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Details > Igniting arrangements > Igniting by movement of a solid electrode
H01J 13/405 Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Details > Igniting arrangements > Igniting by movement of a solid electrode