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公开(公告)号：US3113236A
公开(公告)日：1963-12-03
申请号：US3682760
申请日：1960-06-17
Applicant: PHILIPS CORP
Inventor： JOHANNES LEMMENS HENDRIKUS , PIETER ZALM , STRATUM ANTONIUS JOHANNES ALBE , REINIER BLATTER JOHANNES , RAYMUND ALMER FRIEDRICH HERMAN
IPC: H01J1/28
CPC classification number: H01J1/28
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