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PCE
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DIFF Subgroup
H01J 3/22

using electromagnetic means only

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps > Arrangements for focusing or reflecting ray or beam > Magnetic lenses > using electromagnetic means only

CPC:

Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps > Arrangements for focusing or reflecting ray or beam (H01J3/02, H01J3/04 take precedence) > Magnetic lenses > using electromagnetic means only

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