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发明名称
Traverse sous voies en béton armé
摘要
申请公布号
FR1060574(A)
申请公布日期
1954.04.02
申请号
FRD1060574
申请日期
1952.07.24
申请人
发明人
CATHALA PAUL-JEAN-PIERRE
分类号
E01B3/42
主分类号
E01B3/42
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代理人
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