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发明名称
Dispositif récepteur pour télégraphie à courants porteurs avec amplification desimpulsions
摘要
申请公布号
FR707343(A)
申请公布日期
1931.07.07
申请号
FRD707343
申请日期
1930.12.10
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
分类号
H04L27/06
主分类号
H04L27/06
代理机构
代理人
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