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公开(公告)号：US2872624A
公开(公告)日：1959-02-03
申请号：US65927357
申请日：1957-05-15
Applicant: BELL TELEPHONE LABOR INC
Inventor： EMIL BELEK , MILOCHE HERMAN A , REIMELS HARRY G
IPC: H05K7/06
CPC classification number: H05K7/06
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