DRILLING ASSEMBLIES INCLUDING ONE OF A COUNTER ROTATING DRILL BIT AND A COUNTER ROTATING REAMER, METHODS OF DRILLING, AND METHODS OF FORMING DRILLING ASSEMBLIES专利检索- .带导向部件的钻头即带导向切削钻头的用于扩孔的钻头例如扩孔器专利检索查询-专利查询网

DRILLING ASSEMBLIES INCLUDING ONE OF A COUNTER ROTATING DRILL BIT AND A COUNTER ROTATING REAMER, METHODS OF DRILLING, AND METHODS OF FORMING DRILLING ASSEMBLIES
申请号	EP10733835	申请日	2010-01-21	公开(公告)号	EP2379836A4	公开(公告)日	2014-01-08
申请人	BAKER HUGHES INC;			发明人	RADFORD STEVEN; MEINERS MATTHEW J;
摘要
权利要求
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