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公开(公告)号：US3317864A
公开(公告)日：1967-05-02
申请号：US44814565
申请日：1965-04-14
Applicant: TELEFUNKEN PATENT
Inventor： ERICH WOLTER , KARL SCHWARZ
CPC classification number: H03D9/0666 , H01P7/04 , H04B1/1018
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