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Patentes

Citada por

Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US411916031 Ene 197710 Oct 1978The Curators of the University of MissouriMethod and apparatus for water jet drilling of rock
US46745797 Mar 198523 Jun 1987FlowMole CorporationMethod and apparatus for installment of underground utilities
US467963717 Abr 198614 Jul 1987Apparatus and method for forming an enlarged underground arcuate bore and installing a conduit therein
US478746318 Abr 198829 Nov 1988FlowMole CorporationMethod and apparatus for installment of underground utilities
US482388815 Dic 198725 Abr 1989Apparatus for making a subterranean tunnel
US50526241 Dic 19891 Oct 1991Possis CorporationUltra high pressure water cleaning tool
US509600226 Jul 199017 Mar 1992Cherrington CorporationMethod and apparatus for enlarging an underground path
US52096058 Nov 199111 May 1993EVI Cherrington Enviromental, Inc.Gravel-packed pipeline and method and apparatus for installation thereof
US52303888 Nov 199127 Jul 1993Cherrington CorporationMethod and apparatus for cleaning a bore hole using a rotary pump
US52693848 Nov 199114 Dic 1993Cherrington CorporationMethod and apparatus for cleaning a bore hole
US535176410 Ene 19924 Oct 1994Cherrington CorporationMethod and apparatus for enlarging an underground path
US577899129 Ago 199614 Jul 1998Vermeer Manufacturing CompanyDirectional boring
US58530561 Abr 199629 Dic 1998Method of and apparatus for horizontal well drilling
US618962914 Sep 199820 Feb 2001Lateral jet drilling system
US635753715 Mar 200019 Mar 2002Vermeer Manufacturing CompanyDirectional drilling machine and method of directional drilling
US637862921 Ago 200030 Abr 2002Saturn Machine & Welding Co., Inc.Boring apparatus
US641257817 Ene 20012 Jul 2002DHDT, Inc.Boring apparatus
US649111522 Ene 200110 Dic 2002Vermeer Manufacturing CompanyDirectional drilling machine and method of directional drilling
US65505535 Abr 200222 Abr 2003Dhdt, Inc.Boring apparatus
US658851716 May 20028 Jul 2003DHDT, Inc.Boring apparatus
US697145713 Jun 20036 Dic 2005Batesville Services, Inc.Moldable fabric
USRE3379314 Jul 198914 Ene 1992Cherrington CorporationApparatus and method for forming an enlarged underground arcuate bore and installing a conduit therein

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