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公开(公告)号：US2846753A
公开(公告)日：1958-08-12
申请号：US30496852
申请日：1952-08-18
Applicant: GEN ELECTRIC
Inventor： ZUNICK MICHAEL J , ILLINWORTH JOHN E
IPC: H01J35/12
CPC classification number: H01J35/12
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