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公开(公告)号：US2964881A
公开(公告)日：1960-12-20
申请号：US61830356
申请日：1956-10-25
Applicant: PHILIPS NV
Inventor： JANSSEN JOHANNES CORNELIS
CPC classification number: C03C27/00 , B64C25/02 , B64C25/34 , C03C27/042 , H01J5/20 , H01J5/44 , H01J29/92 , H01J2893/0037
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