Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 12, 2006
Patent Application Number
10490173
Date Filed
September 19, 2002
Patent Primary Examiner
Patent abstract
Device and method for drilling into geological formations. The device comprises:a rotatable body;drilling cutters arranged on an axial end surface of the rotatable body;a percussion part, which is parallel to the rotating axis reciprocatable arranged on said body; andpercussion cutters arranged on an axial end surface of the percussion part.
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