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公开(公告)号：US2862336A
公开(公告)日：1958-12-02
申请号：US58064756
申请日：1956-04-25
Applicant: GEN ELECTRIC
Inventor： EDWARDS MONTE W , MURPHY MARTIN O
IPC: H01J5/24
CPC classification number: H01J5/24 , H01J2893/0039
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