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公开(公告)号：US2402601A
公开(公告)日：1946-06-25
申请号：US43113442
申请日：1942-02-16
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： PAUL CHEVIGNY GEORGES , KEW GARDENS , EMILE LABIN
IPC: H01J19/80
CPC classification number: H01J19/80
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