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公开(公告)号：US3427088A
公开(公告)日：1969-02-11
申请号：US3427088D
申请日：1967-06-02
Applicant: PHILIPS CORP
Inventor： LEGOUX RENE
CPC classification number: H01J40/00 , H01J5/28 , H01J9/263 , H01J9/38 , H01J2893/0044
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