Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie des Lampes
Original Assignee
Compagnie des Lampes
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie des LampesfiledCriticalCompagnie des Lampes
Priority to ES0184237ApriorityCriticalpatent/ES184237A1/es
Publication of ES184237A1publicationCriticalpatent/ES184237A1/es
Mejoras introducidas en los cátodos de tubos electrónicos lámparas de descarga y análogos caracterizadas porque la materia emisora de estos cátodos está constituida por circonato de bario solo o con adición de un carbonato alcalinotérreo o de óxido de torio.
ES0184237A1948-06-231948-06-23MEJORAS INTRODUCIDAS EN LOS CáTODOS DE TUBOS ELECTRoNICOS
ExpiredES184237A1
(es)