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公开(公告)号：US3051908A
公开(公告)日：1962-08-28
申请号：US639360
申请日：1960-02-03
Applicant: BELL TELEPHONE LABOR INC
Inventor： ANDERSON WILLIAM W , HINES MARION E
IPC: H01P1/365
CPC classification number: H01P1/365
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