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Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US424696726 Jul 197927 Jan 1981The Dow Chemical CompanyCementing head apparatus and method of operation
US468718227 Nov 198518 Aug 1987SHW Schwabische Huttenwerke GmbHHeight adjustable pot bearing
US491718414 Feb 198917 Apr 1990Halliburton CompanyCement head and plug
US509598819 Feb 199117 Mar 1992Plug injection method and apparatus
US594116223 Dec 199724 Aug 1999Caterpillar Inc.Piston
US753705216 Oct 200726 May 2009Mako Rentals, Inc.Ball dropping tool method and apparatus