CPC Subgroup
H01J 17/52 with one cathode and one anode
Full Title
Gas-filled discharge tubes with solid cathode (H01J25/00, H01J27/00, H01J31/00 - H01J41/00 take precedence; gas filled spark gaps H01T; Marx converters H02M7/26) > Thermionic-cathode tubes > with one cathode and one anode
1 direct subcode
Child Classifications
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- H01J 17/54 having one or more control electrodes