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PCE
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DIFF Subgroup
H01J 29/64

Magnetic lenses

Introduced: September 1968

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 > Arrangements for focusing or reflecting ray or beam > Magnetic lenses

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 > Arrangements for focusing or reflecting ray or beam > Magnetic lenses

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

Child Classifications

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  • H01J 29/66 using electromagnetic means only IPC+CPC Available in IPC and CPC
  • H01J 29/68 using permanent magnets only IPC+CPC Available in IPC and CPC