Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"ANDREWS FREDERICK T JR" Page 1

1.

发明授权
Transmission measuring system with harmonic generating means 失效
Title translation: 具有谐波发生装置的传动测量系统

公开(公告)号：US3526729A

公开(公告)日：1970-09-01

申请号：US3526729D

申请日：1966-04-13

Applicant: BELL TELEPHONE LABOR INC

Inventor： ANDREWS FREDERICK T JR , MITCHELL DOREN

IPC: G01R27/28 , H04M3/30 , H04M5/00

CPC classification number: H04M3/301 , G01R27/28

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