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公开(公告)号：US3193734A
公开(公告)日：1965-07-06
申请号：US18176262
申请日：1962-03-22
Applicant: BELL TELEPHONE LABOR INC
Inventor： HEMPSTEAD CHARLES F , KIM YOUNG B
CPC classification number: H01F6/00 , H01F6/02 , Y10S505/88
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公开(公告)号：US3234435A
公开(公告)日：1966-02-08
申请号：US29361263
申请日：1963-07-09
Applicant: BELL TELEPHONE LABOR INC
Inventor： HEMPSTEAD CHARLES F , KIM YOUNG B
IPC: H01F6/00
CPC classification number: H01F6/00 , Y10S505/87
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