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发明名称
éléments préfabriqués pour prospections souterraines
摘要
申请公布号
FR1376613(A)
申请公布日期
1964.10.31
申请号
FR19630945702
申请日期
1963.08.26
申请人
发明人
SAULNIER GEORGES
分类号
E21D5/04;E21D11/08;E21D11/38
主分类号
E21D5/04
代理机构
代理人
主权项
地址
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