Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP5718481ApriorityCriticalpatent/JPS57172635A/ja
Publication of JPS57172635ApublicationCriticalpatent/JPS57172635A/ja
Publication of JPH0472340B2publicationCriticalpatent/JPH0472340B2/ja
H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
H01J23/14—Leading-in arrangements; Seals therefor
H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices