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发明名称
Dispositif perfectionné pour amener du fluide à un outil de forage
摘要
申请公布号
FR1319805(A)
申请公布日期
1963.03.01
申请号
FR19620894500
申请日期
1962.04.14
申请人
ATLAS COPCO AKTIEBOLAG
发明人
分类号
E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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