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经营范围
发明名称
ROEHRENFASSUNG.
摘要
申请公布号
DE1672398(U)
申请公布日期
1954.02.25
申请号
DE195300N3746U
申请日期
1953.12.21
申请人
NORDDEUTSCHE-MENDE-RUNDFUNK-G.M.B.H.
发明人
分类号
主分类号
代理机构
代理人
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