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公开(公告)号：US3318169A
公开(公告)日：1967-05-09
申请号：US43125465
申请日：1965-02-09
Applicant: ERICSSON TELEFON AB L M
Inventor： ERLING TRONSLIEN
CPC classification number: H04M1/23 , H04M1/31 , Y10T29/49915 , Y10T29/49934 , Y10T74/19856 , Y10T74/19893 , Y10T74/2084
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