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发明名称
GERAET ZUR AUFNAHME UND WIEDERGABE VON TELEFONGESPRAECHEN.
摘要
申请公布号
DE1840455(U)
申请公布日期
1961.11.02
申请号
DE196100M7616U
申请日期
1961.03.20
申请人
WILLY MUELLER
发明人
WILLY MUELLER
分类号
主分类号
代理机构
代理人
主权项
地址
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