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Kapazella A G
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Kapazella A G
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Publication of FR825900ApublicationCriticalpatent/FR825900A/fr
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/38—Cold-cathode tubes
H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
FR825900D1936-08-271937-08-25Dispositif indicateur de conducteur mobile par influence sur l'état de décharge d'un tube de décharge gazeux
ExpiredFR825900A
(fr)