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经营范围
发明名称
Telephone circuits
摘要
申请公布号
GB544364(A)
申请公布日期
1942.04.09
申请号
GB19410012490
申请日期
1940.05.17
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H04M1/58
主分类号
H04M1/58
代理机构
代理人
主权项
地址
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