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CPC Subgroup
H01J 19/50

Spacing members extending to the envelope

Full Title

Details of vacuum tubes of the types covered by group H01J21/00 > Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies > Spacing members extending to the envelope

1 direct subcode

Child Classifications

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  • H01J 19/52 without fixed connection between spacing member and envelope