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经营范围
发明名称
Electrical wave filters
摘要
申请公布号
GB475275(A)
申请公布日期
1937.11.17
申请号
GB19360014547
申请日期
1936.05.22
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
A41B9/06
主分类号
A41B9/06
代理机构
代理人
主权项
地址
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