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发明名称
Plan d'intercommunication pour un système automatique de signalisation
摘要
申请公布号
FR1065475(A)
申请公布日期
1954.05.26
申请号
FRD1065475
申请日期
1952.05.19
申请人
STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONI
发明人
OBERMAN ROELOF MAARTEN MARIS
分类号
H04Q1/18;H04Q3/00;H04Q3/42
主分类号
H04Q1/18
代理机构
代理人
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地址
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