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发明名称
Perfectionnements aux systèmes de commande à distance
摘要
申请公布号
FR951349(A)
申请公布日期
1949.10.21
申请号
FRD951349
申请日期
1947.08.06
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
分类号
B61L7/08
主分类号
B61L7/08
代理机构
代理人
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