Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01J 19/064

with other metal oxides as an emissive material

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Details of vacuum tubes of the types covered by group > Electron-emitting electrodes; Cathodes > Thermionic cathodes > characterised by the material > with other metal oxides as an emissive material

CPC:

Details of vacuum tubes of the types covered by group H01J21/00 > Electron-emitting electrodes; Cathodes > Thermionic cathodes > characterised by the material > with other metal oxides as an emissive material

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