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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US43297931 Nov 197918 May 1982The British Petroleum Company LimitedSoil moving device
US44281328 Sep 198231 Jan 1984The British Petroleum Company p.l.c.Trenching plow with plow carriage on curved supporting track
US48155459 Apr 198628 Mar 1989Subsoil blade ploughs
US497468116 Dec 19884 Dec 1990Method for fracturing sub-surface hardpan by drawing a particularly-angled tine therethrough
US606193229 Apr 199816 May 2000Coflexip Stena OffshoreSteerable underwater plow with movable body member
US710412522 Feb 200612 Sep 2006Vetco Gray Inc.Internal riser inspection device and methods of using same