ClassID:

205007

H01J29/385 - CPC Classification

Classification description:

Details of cathode-ray tubes or of electron-beam tubes of the types covered by group; Electrodes; Screens; Mounting, supporting, spacing or insulating thereof; Screens on or from which an image or pattern is formed, picked up, converted or stored; Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode Photocathodes comprising a layer which modified the wave length of impinging radiation

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