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Filing date
Publication date
Publication of BE373149ApublicationCriticalpatent/BE373149A/xx
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
H01J1/15—Cathodes heated directly by an electric current
H01J1/18—Supports; Vibration-damping arrangements
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J21/00—Vacuum tubes
H01J21/02—Tubes with a single discharge path
H01J21/06—Tubes with a single discharge path having electrostatic control means only
H01J21/16—Tubes with a single discharge path having electrostatic control means only with external electrostatic control means and with or without internal control electrodes