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公开(公告)号：US3405374A
公开(公告)日：1968-10-08
申请号：US58624766
申请日：1966-10-12
Applicant: BELL TELEPHONE LABOR INC
Inventor： DAYEM ALY H , EISENMENGER WOLFGANG F , MILLER BARRY I
CPC classification number: B06B1/04 , H03F13/00 , H03H9/30 , Y10S505/866
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