… or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television …
Explanatory notes
… or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television … - Other valves and tubes : 8540.81 - - Receiver or amplifier valves and tubes 8540.89 - - Other - … This heading covers only those valves and tubes which, for different purposes, utilise the effect of electrons emitted …