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经营范围
发明名称
Dielectric filter
摘要
申请公布号
GB0307253(D0)
申请公布日期
2003.05.07
申请号
GB20030007253
申请日期
2003.03.28
申请人
NGK SPARK PLUG CO LTD
发明人
分类号
H01P1/205;H01P7/10
主分类号
H01P1/205
代理机构
代理人
主权项
地址
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