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Publication of FR1137548ApublicationCriticalpatent/FR1137548A/fr
H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
H01J29/58—Arrangements for focusing or reflecting ray or beam
H01J29/64—Magnetic lenses
FR1137548D1954-09-201955-09-10Perfectionnements apportés aux procédés et dispositifs pour régler des faisceaux d'électrons ou analogues
ExpiredFR1137548A
(fr)