Krytron 1970-01-01
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La Compagnie des Lampes 1970-01-01
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List of Mullard–Philips vacuum tubes 1970-01-01
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List of vacuum-tube computers 1970-01-01
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List of vacuum tubes 1970-01-01
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Loewe 3NF 1970-01-01
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Machlett Laboratories 1970-01-01
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Micropup 1970-01-01
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Monoscope 1970-01-01
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Mullard 1970-01-01
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Mullard 5-10 1970-01-01
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Mullard–Philips tube designation 1970-01-01
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Nanoscale vacuum-channel transistor 1970-01-01
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Nonode 1970-01-01
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Nuvistor 1970-01-01
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Output transformerless 1970-01-01
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Pentagrid converter 1970-01-01
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Pentode 1970-01-01
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Phantastron 1970-01-01
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Philips 1970-01-01
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