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经营范围
发明名称
Modulating systems for electric wave signalling
摘要
申请公布号
GB537731(A)
申请公布日期
1941.07.03
申请号
GB19400009181
申请日期
1940.05.24
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03C1/58
主分类号
H03C1/58
代理机构
代理人
主权项
地址
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