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经营范围
发明名称
Improvements in or relating to electric multichannel carrier current communication systems
摘要
申请公布号
GB604230(A)
申请公布日期
1948.06.30
申请号
GB19450026050
申请日期
1945.10.05
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H04J9/00
主分类号
H04J9/00
代理机构
代理人
主权项
地址
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