Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01J 1/28

Dispenser-type cathodes, e.g. L-cathode

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps > Main electrodes > Solid thermionic cathodes > Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment > Dispenser-type cathodes, e.g. L-cathode

CPC:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical or ion-optical arrangements H01J3/00) > Main electrodes > Solid thermionic cathodes > Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment > Dispenser-type cathodes, e.g. L-cathode

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