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发明名称
UEberwachungsschaltung fuer Verbindungen zur UEbertragung von Nachrichtenkanaelen
摘要
申请公布号
DE923729(C)
申请公布日期
1955.02.21
申请号
DE1952S030682
申请日期
1952.10.17
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
SEIBT EDUARD DIPL.-ING.
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