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发明名称
PROCEDE ET DISPOSITIF POUR ETABLIR UNE DEPRESSION DANS UNE ZONE DE TERRAIN PERMEABLE ISOLEE DE L'ATMOSPHERE PAR UNE MEMBRANE ETANCHE.
摘要
申请公布号
FR2663373(B1)
申请公布日期
1993.05.28
申请号
FR19900007580
申请日期
1990.06.18
申请人
COGNON JEAN MARIE
发明人
COGNON JEAN MARIE
分类号
E02D3/10;F04F5/44;F04F5/54;(IPC1-7):F04F5/54;B01D19/00;E02D3/046;F04F5/04
主分类号
E02D3/10
代理机构
代理人
主权项
地址
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