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经营范围
发明名称
Perfectionnements aux carrefours (croisements) des routes
摘要
申请公布号
FR940788(A)
申请公布日期
1948.12.22
申请号
FRD940788
申请日期
1947.02.08
申请人
发明人
KOGAN ALEXANDRE
分类号
E01C1/04
主分类号
E01C1/04
代理机构
代理人
主权项
地址
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