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发明名称
Kombineret Koblingsanordning til elektriske Forstærkere.
摘要
申请公布号
DK45165(C)
申请公布日期
1932.02.01
申请号
DKD45165
申请日期
1930.12.15
申请人
NIELS HANSEN
发明人
NIELS HANSEN
分类号
主分类号
代理机构
代理人
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