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Application filed by Philips NvfiledCriticalPhilips Nv
Publication of CH261760ApublicationCriticalpatent/CH261760A/en
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
CH261760D1946-10-071947-11-20
Electric discharge tube.
CH261760A
(en)