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公开(公告)号：US2533239A
公开(公告)日：1950-12-12
申请号：US63929046
申请日：1946-01-05
Applicant: INT STANDARD ELECTRIC CORP
Inventor： WALTER GENT ALFRED , JOHN WALLIS PETER
IPC: H01P5/02
CPC classification number: H01P5/026
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