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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
H01J1/14—Solid thermionic cathodes characterised by the material
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Analysing Materials By The Use Of Radiation
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GB19054/27A1926-07-191927-07-18Incandescent cathode for electron discharge tubes
ExpiredGB274509A
(en)
Kathode für eine elektrische Entladungsröhre, deren Wand mindestens teilweise aus einem porösen Körper aus hochschmelzendem Metall besteht und Verfahren zur Herstellung dieser Kathode.