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公开(公告)号：US2861211A
公开(公告)日：1958-11-18
申请号：US51223855
申请日：1955-05-31
Applicant: INT STANDARD ELECTRIC CORP
Inventor： STANLEY BROWN KENNETH , NATHANIEL BASNETT THOMAS
IPC: H01J19/38
CPC classification number: H01J19/38 , H01J2893/0016
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