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发明名称
IMPROVEMENTS IN OR RELATING TO ELECTROMECHANICAL FILTERS
摘要
申请公布号
GB1240237(A)
申请公布日期
1971.07.21
申请号
GB19690028427
申请日期
1969.06.05
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
ALBERT RUSSEN
分类号
H03H9/50
主分类号
H03H9/50
代理机构
代理人
主权项
地址
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