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经营范围
发明名称
Noise reduction circuit
摘要
申请公布号
US2207886(A)
申请公布日期
1940.07.16
申请号
US19380212426
申请日期
1938.06.08
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
JOHANNESSON BENNO
分类号
H04B1/10;H04B1/12
主分类号
H04B1/10
代理机构
代理人
主权项
地址
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