DIFF Subgroup
H01J 19/42 Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Details of vacuum tubes of the types covered by group > Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
CPC:
Details of vacuum tubes of the types covered by group H01J21/00 > Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
Child Classifications
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- H01J 19/44 Insulation between electrodes or supports within the vacuum space IPC+CPC Available in IPC and CPC