… and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television camera tubes). …
Explanatory notes
… and tubes, mercury arc rectifying valves and tubes, cathode-ray tubes, television camera tubes). ‑ … other photo‑cathode tubes 8540.40 - Data/graphic display tubes, monochrome; data/graphic display tubes, … termed diodes, triodes, tetrodes, etc. The same envelope may contain two or more systems with different functions …