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发明名称
Dispositif pour la transmission de messages
摘要
申请公布号
FR874503(A)
申请公布日期
1942.08.10
申请号
FRD874503
申请日期
1941.08.05
申请人
BROWN, BOVERI & COMPAGNIE
发明人
分类号
H04L9/34
主分类号
H04L9/34
代理机构
代理人
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