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经营范围
发明名称
Directional couplings
摘要
申请公布号
US2951218(A)
申请公布日期
1960.08.30
申请号
US19570641053
申请日期
1957.02.19
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
ARDITI MAURICE
分类号
H01P3/08;H01P5/18
主分类号
H01P3/08
代理机构
代理人
主权项
地址
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