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发明名称
Lautwiedergabe-Vorrichtung
摘要
申请公布号
DE507802(C)
申请公布日期
1930.09.20
申请号
DENDATS088507D
申请日期
申请人
SACHSENWERK LICHT- UND KRAFT-AKT.-GES.
发明人
分类号
H04R1/24
主分类号
H04R1/24
代理机构
代理人
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地址
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