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发明名称
Trappes de regard de chaussées en fonte, pavés et béton armé
摘要
申请公布号
FR52725(E)
申请公布日期
1945.05.17
申请号
FRD52725
申请日期
1943.01.19
申请人
发明人
RENARD RAYMOND-ROBERT
分类号
E02D29/14
主分类号
E02D29/14
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代理人
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