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经营范围
发明名称
ELECTROMECHANICAL FILTERS
摘要
申请公布号
GB1527954(A)
申请公布日期
1978.10.11
申请号
GB19760050874
申请日期
1976.12.07
申请人
SIEMENS AG
发明人
分类号
H03H9/46;H03H9/50;H04R17/08;(IPC1-7):H03H9/26
主分类号
H03H9/46
代理机构
代理人
主权项
地址
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