Barkhausen–Kurz tube 1970-01-01
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Beam deflection tube 1970-01-01
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Beam tetrode 1970-01-01
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Biasing 1970-01-01
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British Valve Association 1970-01-01
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Cathode bias 1970-01-01
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Cavity magnetron 1970-01-01
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Compactron 1970-01-01
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Control grid 1970-01-01
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Direct-view bistable storage tube 1970-01-01
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Double diode triode 1970-01-01
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EF50 1970-01-01
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EF86 1970-01-01
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EL34 1970-01-01
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EL84 1970-01-01
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Edison and Swan Electric Light Company 1970-01-01
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Ei Niš 1970-01-01
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Eimac 1970-01-01
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Electron-stimulated luminescence 1970-01-01
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Electron gun 1970-01-01
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