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公开(公告)号：US2954502A
公开(公告)日：1960-09-27
申请号：US77276058
申请日：1958-11-10
Applicant: BELL TELEPHONE LABOR INC
Inventor： CARPENTER KEITH R , LANE RICHARD F , NEWHOUSE RUSSELL C
IPC: H03K4/72
CPC classification number: H03K4/72
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