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公开(公告)号：US2485577A
公开(公告)日：1949-10-25
申请号：US58884245
申请日：1945-04-17
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： LESTER DUBIN , ERNEST PATAKL
IPC: G01R27/12
CPC classification number: G01R27/12
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