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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US426662114 Aug 197812 May 1981Christensen, Inc.Well casing window mill
US50785452 Aug 19907 Jan 1992Kabushiki Kaisha Iseki Kaihatsu KokiMethod for boring hole in the ground and apparatus therefor
US540285621 Dec 19934 Apr 1995Amoco CorporationAnti-whirl underreamer
US542382423 Mar 199313 Jun 1995Radi Medical Systems ABMethod of accessing hard tissue
US581082614 Feb 199522 Sep 1998Radi Medical Systems ABPuncture instrument
US729988726 Mar 200327 Nov 2007Kingdream Public Ltd. Co.Roller bit with a journal pin offset from the central axis thereof