CPC Subgroup
H01J 23/11 Means for reducing noise (in electron or ion gun H01J23/06)
Full Title
Details of transit-time tubes of the types covered by group H01J25/00 > Electrodes; Magnetic control means; Screens (associated with resonator or delay system H01J23/16) > Means for reducing noise (in electron or ion gun H01J23/06)