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Osa Participations Industrielles SA
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Osa Participations Industrielles SA
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Application grantedgrantedCritical
Publication of FR758622ApublicationCriticalpatent/FR758622A/fr
H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
H01J61/22—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent vapour of an alkali metal
FR758622D1932-12-311933-07-19Lampe électrique à décharge avec remplissage de gaz rare, en particulier pour la télévision
ExpiredFR758622A
(fr)