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Filing date
Publication date
Application filedfiledCritical
Publication of BE450266ApublicationCriticalpatent/BE450266A/xx
H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
H01J7/24—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04B—TRANSMISSION
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission