Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices

Full Title

Details of transit-time tubes of the types covered by group H01J25/00 > Leading-in arrangements; Seals therefor > Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices