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发明名称
PILE A SOUTIRAGE, NOTAMMENT POUR LE SOUTENEMENT DANS LES MINES
摘要
申请公布号
FR2576057(B3)
申请公布日期
1987.06.26
申请号
FR19850000812
申请日期
1985.01.15
申请人
MARREL BENNES
发明人
NOEL CHABANAS
分类号
E21D23/00;E21D23/04;(IPC1-7):E21D23/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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