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经营范围
发明名称
Dispositif de sécurité pour passages à niveau
摘要
申请公布号
FR799205(A)
申请公布日期
1936.06.09
申请号
FRD799205
申请日期
1935.10.09
申请人
发明人
MONFROY
分类号
B61L29/02
主分类号
B61L29/02
代理机构
代理人
主权项
地址
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