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发明名称
Improvements in or relating to communicating cables of high line attenuation
摘要
申请公布号
GB364008(A)
申请公布日期
1931.12.28
申请号
GB19300025588
申请日期
1930.08.27
申请人
SIEMENS - SCHUCKERTWERKE AKTIENGESELLSCHAFT
发明人
分类号
H04B3/00;H04B3/32
主分类号
H04B3/00
代理机构
代理人
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地址
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