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发明名称
Dispositif de signalisation avec installation d'éclairage, et de surveillance de défauts aux conducteurs auxiliaires du câble correspondant
摘要
申请公布号
FR1140269(A)
申请公布日期
1957.07.18
申请号
FRD1140269
申请日期
1956.01.19
申请人
SIEMENS-SCHUCKERTWERKE AKTIENGESELLSCHAFT
发明人
分类号
E21F17/18;H02H7/00
主分类号
E21F17/18
代理机构
代理人
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