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发明名称
Perfectionnements aux ouvrages d'art tels que voûtes en souterrain
摘要
申请公布号
FR1388077(A)
申请公布日期
1965.02.05
申请号
FR19630958624
申请日期
1963.12.27
申请人
发明人
MALTHE LOUIS;FRADET RAOUL FRANCOIS
分类号
E21D11/08
主分类号
E21D11/08
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代理人
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地址
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