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公开(公告)号：US2858513A
公开(公告)日：1958-10-28
申请号：US45350854
申请日：1954-09-01
Applicant: INT STANDARD ELECTRIC CORP
Inventor： LEONARD LEWIN , BERNARD STECHFIELD JOHN
IPC: H01P1/213
CPC classification number: H01P1/2133
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