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MO Valve Co Ltd
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MO Valve Co Ltd
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Application filed by MO Valve Co LtdfiledCriticalMO Valve Co Ltd
Application grantedgrantedCritical
Publication of FR948257ApublicationCriticalpatent/FR948257A/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
H01J1/15—Cathodes heated directly by an electric current
H01J1/18—Supports; Vibration-damping arrangements
FR948257D1942-01-221947-06-20Procédé de fabrication des lampes thermioniques, etc.
ExpiredFR948257A
(fr)