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发明名称	Tong
摘要
申请公布号	GB2415929(B)	申请公布日期	2007.02.14
申请号	GB20050020001	申请日期	2004.03.05
申请人	WEATHERFORD/LAMB INC.	发明人	JOERG E SCHULZE BECKINGHAUSEN
分类号	E21B19/16	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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