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Patents

Referenced by

Citing PatentFiling dateIssue dateOriginal AssigneeTitle
US423019124 Jan 197928 Oct 1980Machine for making underground excavations
US534188725 May 199330 Aug 1994The Charles Machine Works, Inc.Directional multi-blade boring head
US54452227 Jun 199429 Aug 1995Shell Oil CompanyWhipstock and staged sidetrack mill
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US588765530 Jan 199730 Mar 1999Weatherford/Lamb, IncWellbore milling and drilling
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US589488921 Aug 199720 Apr 1999Smith International, Inc.One trip milling system
US594132222 Jun 199824 Aug 1999The Charles Machine Works, Inc.Directional boring head with blade assembly
US664806830 Apr 199918 Nov 2003Smith International, Inc.One-trip milling system
US691309821 Nov 20025 Jul 2005ReedEycalog, L.P.Sub-reamer for bi-center type tools
US709003414 Feb 200215 Aug 2006Reamer having toroidal crusher body and method of use
USRE3745019 Jan 200020 Nov 2001The Charles Machine Works, Inc.Directional multi-blade boring head
USRE3797525 Sep 20004 Feb 2003The Charles Machine Works, Inc.Directional boring head with blade assembly

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