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经营范围
发明名称
High frequency circuit
摘要
申请公布号
US2031490(A)
申请公布日期
1936.02.18
申请号
US19340750819
申请日期
1934.10.31
申请人
FEDERAL TELEGRAPH COMPANY
发明人
KOLSTER FREDERICK A.
分类号
H01P7/04
主分类号
H01P7/04
代理机构
代理人
主权项
地址
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