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Publication of FR973283ApublicationCriticalpatent/FR973283A/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
FR973283D1941-08-181941-08-18Perfectionnement à la cathode incandescente des appareils à décharge
ExpiredFR973283A
(fr)