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发明名称
FREQUENCY FILTERING APPARATUS
摘要
申请公布号
GB2233520(B)
申请公布日期
1992.05.27
申请号
GB19890027813
申请日期
1989.12.08
申请人
* BRITISH AEROSPACE PUBLIC LIMITED COMPANY
发明人
DAVID ERIC * WALLER
分类号
H03D7/16
主分类号
H03D7/16
代理机构
代理人
主权项
地址
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