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发明名称
Circuits de signalisation télégraphique
摘要
申请公布号
FR941508(A)
申请公布日期
1949.01.13
申请号
FRD941508
申请日期
1947.02.14
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
BRUNDAGE JOHN HOLT
分类号
H04L27/02
主分类号
H04L27/02
代理机构
代理人
主权项
地址
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