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公开(公告)号：US3154113A
公开(公告)日：1964-10-27
申请号：US72714058
申请日：1958-04-08
Applicant: PHILIPS CORP
Inventor： GERARD MOESKER
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/0026
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