Patent search ap:("INT STANDARD ELECTRIC CORP") AND inv:"CASTLE JONES ROBERT" Page 1

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发明授权
Fault alarm arrangements for electric communication systems 失效
Title translation: 电气通讯系统的故障报警装置

公开(公告)号：US2744170A

公开(公告)日：1956-05-01

申请号：US33260253

申请日：1953-01-22

Applicant: INT STANDARD ELECTRIC CORP

Inventor： TREVOR DALY CHARLES , CASTLE JONES ROBERT

IPC: H04B17/40 , H04Q1/26

CPC classification number: H04Q1/26 , H04B17/409

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