Drill stem connection and method,申请号GB20090007057-传众专利搜索

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发明名称	Drill stem connection and method
摘要
申请公布号	GB2458822(A)	申请公布日期	2009.10.07
申请号	GB20090007057	申请日期	2009.04.24
申请人	TT TECHNOLOGIES INC	发明人	MICHAEL TJADER
分类号	E21B19/16;B25B13/48;B25B13/50	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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