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公开(公告)号：US2831157A
公开(公告)日：1958-04-15
申请号：US38143253
申请日：1953-09-21
Applicant: INT STANDARD ELECTRIC CORP
Inventor： HARRY GRAYSON , GEORGE DUNKLEY ARTHUR , HAROLD WALKER THOMAS
IPC: H01F29/14
CPC classification number: H01F29/14 , H01F2029/143
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