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发明名称
Improvements in receiving apparatus for alternating current telegraphy
摘要
申请公布号
GB530576(A)
申请公布日期
1940.12.16
申请号
GB19390017278
申请日期
1939.06.13
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
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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