ClassID:

205144

H01J31/502 - CPC Classification

Classification description:

Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored; Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output with an electrostatic electron optic system with means to interrupt the beam, e.g. shutter for high speed photography

Recent Application in this class: