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公开(公告)号：US2474275A
公开(公告)日：1949-06-28
申请号：US61787645
申请日：1945-09-21
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： MANUEL OSTLUND EVERT , WALTER SOKOLOFF PAUL
IPC: H03K3/55
CPC classification number: H03K3/55
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