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发明名称
KONDENSATORMIKROPHON.
摘要
申请公布号
DE1639770(U)
申请公布日期
1952.06.19
申请号
DE195200G4704U
申请日期
1952.04.09
申请人
MAX GRUNDIG
发明人
MAX GRUNDIG
分类号
主分类号
代理机构
代理人
主权项
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