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发明名称
Dispositif assurant la sécurité des convois de chemins de fer
摘要
申请公布号
FR733353(A)
申请公布日期
1932.10.05
申请号
FRD733353
申请日期
1931.05.27
申请人
发明人
AUGEREAU WILLIAM
分类号
B61L3/10
主分类号
B61L3/10
代理机构
代理人
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