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.)
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Societe Francaise Radio Electrique
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Societe Francaise Radio Electrique
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Application filed by Societe Francaise Radio ElectriquefiledCriticalSociete Francaise Radio Electrique
Application grantedgrantedCritical
Publication of FR1027127ApublicationCriticalpatent/FR1027127A/fr
H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H01J1/02—Main electrodes
H01J1/13—Solid thermionic cathodes
H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
H01J1/26—Supports for the emissive material
FR1027127D1950-11-021950-11-02Perfectionnements aux électrodes pour tubes à décharge
ExpiredFR1027127A
(fr)