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发明名称
Appareil préventif des accidents de la voie publique notamment aux carrefours, tournants, passages à niveau, etc.
摘要
申请公布号
FR687194(A)
申请公布日期
1930.08.05
申请号
FRD687194
申请日期
1929.12.24
申请人
发明人
MICHEL DIRK JEAN GERARD
分类号
G08B5/00
主分类号
G08B5/00
代理机构
代理人
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地址
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