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发明名称
systèmes automatiques de signalisation
摘要
申请公布号
FR1056900(A)
申请公布日期
1954.03.03
申请号
FRD1056900
申请日期
1952.01.15
申请人
STAATSBEDRIJF DER POSTERIJEN, TELEGRAFIE EN TELEFONIE
发明人
OBERMAN R. M. M.
分类号
H04Q1/18;H04Q3/42
主分类号
H04Q1/18
代理机构
代理人
主权项
地址
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