Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"MOORE ERNEST P" Page 1

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发明授权
Potential monitoring circuit 失效
Title translation: 潜在监控电路

公开(公告)号：US2846526A

公开(公告)日：1958-08-05

申请号：US51664255

申请日：1955-06-20

Applicant: BELL TELEPHONE LABOR INC

Inventor： MOORE ERNEST P , TRENT ROBERT L

IPC: H04M3/30

CPC classification number: H04M3/30

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