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Publication of BE520259ApublicationCriticalpatent/BE520259A/xx
H01J61/067—Main electrodes for low-pressure discharge lamps
H01J61/0675—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode
H01J61/0677—Main electrodes for low-pressure discharge lamps characterised by the material of the electrode characterised by the electron emissive material