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公开(公告)号：US2535667A
公开(公告)日：1950-12-26
申请号：US12657449
申请日：1949-11-10
Applicant: BELL TELEPHONE LABOR INC
Inventor： BURGER MICHAEL J , CLEMENT GEORGE F
IPC: G01L7/10
CPC classification number: G01L7/10
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