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发明名称
Perfectionnements aux systèmes de signalisation électrique
摘要
申请公布号
FR934920(A)
申请公布日期
1948.06.04
申请号
FRD934920
申请日期
1946.10.17
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
BRAY FREDERICK HARRY;BATES ERNEST FREDERICK;DOUGHTY JOHN CONNELL
分类号
G08B17/06;G08B25/04
主分类号
G08B17/06
代理机构
代理人
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