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经营范围
发明名称
Resonanzlautsprecher.
摘要
申请公布号
AT133423(B)
申请公布日期
1933.05.26
申请号
ATD133423
申请日期
1931.07.14
申请人
LEOPOLD POLLAK
发明人
LEOPOLD POLLAK
分类号
主分类号
代理机构
代理人
主权项
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