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发明名称
VERMITTLUNGSAPPARAT FUER FERNSPRECHNEBENSTELLENANLAGEN.
摘要
申请公布号
DE1633245(U)
申请公布日期
1952.01.10
申请号
DE195100T1800U
申请日期
1951.11.17
申请人
TELEFONBAU UND NORMALZEIT G.M.B.H.
发明人
分类号
主分类号
代理机构
代理人
主权项
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