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Radiotechnique SA
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Radiotechnique SA
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Application filed by Radiotechnique SAfiledCriticalRadiotechnique SA
Application grantedgrantedCritical
Publication of FR34112EpublicationCriticalpatent/FR34112E/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
H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
FR34112D1927-07-061927-07-06
Improvements to electron-emitting cathodes
ExpiredFR34112E
(en)