Patent search ap:("ERICSSON TELEFON AB L M") AND inv:"WILHELM HARLIN CARL-ERIK" Page 1

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发明授权
Coin identification and signalling telephone device 失效
Title translation: 硬币识别和信号电话设备

公开(公告)号：US3069502A

公开(公告)日：1962-12-18

申请号：US77078058

申请日：1958-10-30

Applicant: ERICSSON TELEFON AB L M

Inventor： HERBERT EDSTROM NILS , WILHELM HARLIN CARL-ERIK , KURT KATZEFF

IPC: H04M17/02

CPC classification number: H04M17/02 , H04M17/023

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