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Application filed by Philips NvfiledCriticalPhilips Nv
Publication of CH348752ApublicationCriticalpatent/CH348752A/de
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
H01J1/22—Heaters
CH348752D1955-12-131956-12-11Bifilar gewickelter Heizfaden für Kathoden elektrischer Entladungsröhren und Verfahren zu seiner Herstellung
CH348752A
(de)