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Individual
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Individual
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Priority to ES0044832UpriorityCriticalpatent/ES44832Y/es
Publication of ES44832UpublicationCriticalpatent/ES44832U/es
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Publication of ES44832YpublicationCriticalpatent/ES44832Y/es
Una lámpara de luz difusa, a doble ampolla, caracterizada por el hecho de que, la lámpara usual, formada por un filamento resistente de incandescencia encerrado en una ampolla de vidrio cerrada al fuego sobre los filamentos rígidos de conexión, quede dentro de otra ampolla envolvente de vidrio opalino.
ES0044832U1954-11-041954-11-04Una lámpara de luz difusa, a doble ampolla
ExpiredES44832Y
(es)