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经营范围
发明名称
Carrier wave circuit protection
摘要
申请公布号
GB567352(A)
申请公布日期
1945.02.09
申请号
GB19430013995
申请日期
1943.08.27
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03F1/54
主分类号
H03F1/54
代理机构
代理人
主权项
地址
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