Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"COMPTON HARRY B" Page 1

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发明授权
Telephone line concentrator priority call system 失效
Title translation: 电话线路收音机优先呼叫系统

公开(公告)号：US3441681A

公开(公告)日：1969-04-29

申请号：US3441681D

申请日：1965-10-22

Applicant: BELL TELEPHONE LABOR INC

Inventor： CLEMENT GEORGE F , COMPTON HARRY B , STAGG UBERTO K JR , ZEBE CHARLES W

IPC: H04Q3/00 , H04M3/20 , H04Q3/66

CPC classification number: H04Q3/0004

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