The Manufacture of Radio Valves - Presented by Mullard
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- Опубликовано: 28 окт 2011
- This documentary, made by Mullard, shows the manufacture of thermionic radio valves or vacuum tubes.
All the credits go to Claude, who originally posted this video on his channel, Philipsmuseum Amsterdam:
/ philipsmuseum
I just joined the 3 parts together in order to make a full presentation. 
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