Roller cone drill bit with debris flow paths through associated support arms,申请号GB20070003383-传众专利搜索

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发明名称	Roller cone drill bit with debris flow paths through associated support arms
摘要
申请公布号	GB2435282(A)	申请公布日期	2007.08.22
申请号	GB20070003383	申请日期	2007.02.21
申请人	HALLIBURTON ENERGY SERVICES, INC.	发明人	MARK P BLACKMAN;MARK E WILLIAMS;WILLIAM C SAXMAN;MICHAEL B CRAWFORD;GERALD L PRUITT;WILLIAM W KING;BRUCE A ROHDE
分类号	E21B10/18;E21B10/22	主分类号	E21B10/18
代理机构		代理人
主权项
地址

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