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经营范围
发明名称
Improvements in or relating to receiving apparatus for carrier current telegraphy
摘要
申请公布号
GB365811(A)
申请公布日期
1932.01.28
申请号
GB19310003331
申请日期
1931.02.02
申请人
SIEMENS & HALSKE AKTIEN-GESELLSCHAFT
发明人
分类号
H04L27/08
主分类号
H04L27/08
代理机构
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