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公开(公告)号：US2871307A
公开(公告)日：1959-01-27
申请号：US38738353
申请日：1953-10-21
Applicant: ERICSSON TELEFON AB L M
Inventor： KARL BRUNBERG GUNNAR , KURT DIETSCH ARNE
IPC: H01H37/76
CPC classification number: H01H37/76
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