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经营范围
发明名称
Variable attenuators
摘要
申请公布号
GB796238(A)
申请公布日期
1958.06.11
申请号
GB19560012976
申请日期
1956.04.27
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H01P1/22
主分类号
H01P1/22
代理机构
代理人
主权项
地址
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