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经营范围
发明名称
Dispositif combiné de suspension de crépine et d'injection de gravier pour le captage des nappes souterraines par forage
摘要
申请公布号
FR1025730(A)
申请公布日期
1953.04.20
申请号
FRD1025730
申请日期
1950.10.09
申请人
SOCIETE ANONYME TUNISIENNE DE SONDAGES, INJECTIONS, FORAGES
发明人
分类号
E21B43/04
主分类号
E21B43/04
代理机构
代理人
主权项
地址
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