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发明名称
Dispositif pour l'exécution de travaux subaquatiques, notamment derrick pour forages sous-marins et mode d'exécution de ces travaux
摘要
申请公布号
FR1394912(A)
申请公布日期
1965.04.09
申请号
FR19640965044
申请日期
1964.02.25
申请人
发明人
AMANJEAN PASCAL MARIE
分类号
E21B7/124;E21B41/06
主分类号
E21B7/124
代理机构
代理人
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