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Publication of FR677545ApublicationCriticalpatent/FR677545A/fr
H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
H01J9/02—Manufacture of electrodes or electrode systems
H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
H01J9/042—Manufacture, activation of the emissive part
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FR677545D1928-06-301929-06-28Procédé de fabrication de cathodes à fort pouvoir d'émission
ExpiredFR677545A
(fr)