CPC Subgroup
H01J 13/44 Devices for preventing or eliminating arcing-back
Full Title
Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Details > Devices for preventing or eliminating arcing-back
H01J 13/44 Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes > Details > Devices for preventing or eliminating arcing-back