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Publication of NL6615039ApublicationCriticalpatent/NL6615039A/xx
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
H01J29/462—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement arrangements for interrupting the beam during inoperative periods