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PCE
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DIFF Subgroup
H01J 23/083

Electrostatic focusing arrangements

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Details of transit-time tubes of the types covered by group > Electrodes; Magnetic control means; Screens > Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream > Electrostatic focusing arrangements

CPC:

Details of transit-time tubes of the types covered by group H01J25/00 > Electrodes; Magnetic control means; Screens (associated with resonator or delay system H01J23/16) > Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream > Electrostatic focusing arrangements

No child classifications to compare. This is a leaf node in both IPC and CPC.