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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US41311673 Aug 197726 Dec 1978Releasable drill string stabilizer
US449461311 Mar 198222 Jan 1985Kabushiki Kaisha Komatsu SeisakushoMethod and apparatus for driving hollow piles into the ground
US459505828 Aug 198417 Jun 1986Shell Oil CompanyTurbulence cementing sub
US49132465 Oct 19883 Apr 1990Rotary gad for ground drill
US494293230 Jan 198924 Jul 1990Auger drilling system
US588181017 Dec 199616 Mar 1999Weatherford/Lamb, Inc.Centralizer
US644324430 Jun 20003 Sep 2002Marathon Oil CompanyBuoyant drill pipe, drilling method and drilling system for subterranean wells