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发明名称
Способ телеграфирования с компенсацией тока утечки
摘要
申请公布号
SU90909(A1)
申请公布日期
1950.11.30
申请号
SU19500418910
申请日期
1950.05.29
申请人
SELIVANOV A.S.
发明人
SELIVANOV A.S.
分类号
H04L25/06
主分类号
H04L25/06
代理机构
代理人
主权项
地址
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