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经营范围
发明名称
Resonant circuit
摘要
申请公布号
US2875376(A)
申请公布日期
1959.02.24
申请号
US19550532293
申请日期
1955.09.02
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
HAVSTAD HARALD
分类号
H03F3/54;H03H5/00
主分类号
H03F3/54
代理机构
代理人
主权项
地址
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