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发明名称
PROCEDE ET DISPOSITIF POUR FORER DES TROUS D'ANCRAGE DANS LE SOL
摘要
申请公布号
FR2344683(A1)
申请公布日期
1977.10.14
申请号
FR19770008906
申请日期
1977.03.21
申请人
SCHMIDT PAUL
发明人
分类号
E21B7/26;B63B21/26;E02D5/74;E21B4/00;E21B7/20;E21B7/30;E21B17/04;E21B33/13;(IPC1-7):02F5/16;02D29/10;02D5/00;02D17/14;21B7/00;21B23/00
主分类号
E21B7/26
代理机构
代理人
主权项
地址
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