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公开(公告)号：US2834906A
公开(公告)日：1958-05-13
申请号：US42619454
申请日：1954-04-28
Applicant: INT STANDARD ELECTRIC CORP
Inventor： FRANCIS KLEPP GEORGE , ALBERT BEARD DOUGLAS
IPC: H01J17/06
CPC classification number: H01J17/066 , H01J2893/0066
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