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H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
Contact pour ampoule a vide a moyenne tension a structure renforcee, ampoule a vide et disjoncteur, tel qu'un disjoncteur sectionneur d'alternateur associes.