DIFF Subgroup
H01J 29/51 Arrangements for controlling convergence of a plurality of beams
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group > Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement > Electron guns > Arrangements for controlling convergence of a plurality of beams
CPC:
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00 > Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement > Electron guns > Arrangements for controlling convergence of a plurality of beams
No child classifications to compare. This is a leaf node in both IPC and CPC.