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发明名称
Filter med variabel Baandbredde, navnlig bestemt til Radiomodtagere.
摘要
申请公布号
DK57833(C)
申请公布日期
1940.07.29
申请号
DKD57833
申请日期
1938.10.28
申请人
AGA-BALTIC RADIO A/B
发明人
分类号
主分类号
代理机构
代理人
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