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经营范围
发明名称
Low frequency filters
摘要
申请公布号
GB1119509(A)
申请公布日期
1968.07.10
申请号
GB19670029111
申请日期
1967.06.23
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
分类号
H03H11/12
主分类号
H03H11/12
代理机构
代理人
主权项
地址
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