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Ignitron with arc-centering magnetic field

Electric lamp and discharge devices – Liquid electrode discharge devices – Cathode spot anchoring
Patent

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Incandescent lamp getter

Electric lamp and discharge devices – Liquid electrode discharge devices – Auxiliary starting or holding electrode
Patent

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Integral mercury-vapor pressure regulating means for fluorescent

Electric lamp and discharge devices – Liquid electrode discharge devices – Auxiliary starting or holding electrode
Patent

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