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公开(公告)号：US3143604A
公开(公告)日：1964-08-04
申请号：US11333061
申请日：1961-05-29
Applicant: BELL TELEPHONE LABOR INC
Inventor： COCHRAN WILLIAM T , HELDER GEORGE K , MINES JAMES A
IPC: H04B3/46
CPC classification number: H04B3/46
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