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公开(公告)号：US2103501A
公开(公告)日：1937-12-28
申请号：US10105436
申请日：1936-09-16
Applicant: BELL TELEPHONE LABOR INC
Inventor： WALDRON FRED D , WIER ANTHONY J
IPC: H02G15/076
CPC classification number: H02G15/076
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