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经营范围
发明名称
Electrical filters
摘要
申请公布号
GB544144(A)
申请公布日期
1942.03.30
申请号
GB19400014558
申请日期
1940.09.25
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H04B15/02
主分类号
H04B15/02
代理机构
代理人
主权项
地址
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