CPC Subgroup Additional Only
H01J 2223/11 Means for reducing noise
Full Title
Details of transit-time tubes of the types covered by group H01J2225/00 > Electrodes; Magnetic control means; Screens > Means for reducing noise
H01J 2223/11 Details of transit-time tubes of the types covered by group H01J2225/00 > Electrodes; Magnetic control means; Screens > Means for reducing noise