Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"MESCH ORWAR S A" Page 2

11.

发明授权
Test lamp 失效
Title translation: 测试灯

公开(公告)号：US2203469A

公开(公告)日：1940-06-04

申请号：US22263838

申请日：1938-08-02

Applicant: BELL TELEPHONE LABOR INC

Inventor： MESCH ORWAR S A

IPC: F21L14/00 , H04Q1/20

CPC classification number: H04Q1/20 , F21L14/00

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