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发明名称
ROEHRENFASSUNG.
摘要
申请公布号
DE1656198(U)
申请公布日期
1953.05.21
申请号
DE195300T3174U
申请日期
1953.01.17
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
分类号
主分类号
代理机构
代理人
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