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公开(公告)号:US3184553A
公开(公告)日:1965-05-18
申请号:US86296359
申请日:1959-12-30
Applicant: ERICSSON TELEFON AB L M
Inventor: HAROLD BJORK JOHN CARL , ERIK BACKHOLM BENGT
IPC: H04M20060101 , H04Q3/00
CPC classification number: H04Q3/0004
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公开(公告)号:US2871299A
公开(公告)日:1959-01-27
申请号:US58222056
申请日:1956-05-02
Applicant: ERICSSON TELEFON AB L M
Inventor: EMIL NILSSON NILS , OSCAR RODNERT GUSTAV , HAROLD BJORK JOHN CARL
IPC: H04Q3/00
CPC classification number: H04Q3/0004
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公开(公告)号:US2862058A
公开(公告)日:1958-11-25
申请号:US50549155
申请日:1955-05-02
Applicant: ERICSSON TELEFON AB L M
Inventor: EMIL NILSSON NILS , OSKAR RODNERT GUSTAV , HAROLD BJORK JOHN CARL
IPC: H04Q5/00
CPC classification number: H04Q5/00
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4.
公开(公告)号:US3065305A
公开(公告)日:1962-11-20
申请号:US67041057
申请日:1957-07-08
Applicant: ERICSSON TELEFON AB L M
Inventor: EMIL NILSSON NILS , OSCAR RODNERT GUSTAV , HAROLD BJORK JOHN CARL
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公开(公告)号:US2886646A
公开(公告)日:1959-05-12
申请号:US56157956
申请日:1956-01-26
Applicant: ERICSSON TELEFON AB L M
Inventor: EMIL NILSSON NILS , HAROLD BJORK JOHN CARL , OSCAR RODNERT GUSTAV
CPC classification number: H04M11/022 , H04Q3/00
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