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经营范围
发明名称
ELECTROMECHANICAL FILTER
摘要
申请公布号
GB1400307(A)
申请公布日期
1975.07.16
申请号
GB19730005078
申请日期
1973.02.01
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
分类号
H03H9/50;(IPC1-7):H03H9/26
主分类号
H03H9/50
代理机构
代理人
主权项
地址
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