Patent search ap:("ERICSSON TELEFON AB L M") AND inv:"VALENTIN LARSHANS ANDERS GEORG" Page 1

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发明授权
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公开(公告)号：US2706746A

公开(公告)日：1955-04-19

申请号：US23624251

申请日：1951-07-11

Applicant: ERICSSON TELEFON AB L M

Inventor： WALDEMAR HULLEGARD ERIK , VALENTIN LARSHANS ANDERS GEORG

IPC: H04M1/50 , H04Q1/453 , H04Q3/00

CPC classification number: H04M1/50 , H04Q1/453 , H04Q3/00

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