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CBS Corp
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Westinghouse Electric Corp
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Publication of ES209091A1publicationCriticalpatent/ES209091A1/es
Un dispositivi de descaraga eléctrica en gas especialmente una lámpara fluorescente cuyos electrodos de filamento están provistos de un recubrimiento que comprende por lo menos un óxido de un metal alcalino-térreo caracterizado porque el recubrimiento comprende una cantidad de dióxido de hafhio igual a entre aproximadamente 0 1% y 9 4% en peso del peso total de todos los óxidos.
ES0209091A1952-05-311953-04-30Un dispositivo de descarga eléctrica en gas
ExpiredES209091A1
(es)