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发明名称
摘要
申请公布号	FR2111996(A1)	申请公布日期	1972.06.16
申请号	FR19700000681	申请日期	1970.01.09
申请人	PETROLES CIE FSE	发明人
分类号	E21B19/15;E21B19/20;(IPC1-7):E21B15/00;E21B19/00	主分类号	E21B19/15
代理机构		代理人
主权项
地址

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