| 2020/0018,163 | SHAFT ENLARGEMENT ARRANGEMENT FOR A BORING SYSTEM | Sep 21, 17 | Jan 16, 20 | Not available |
| 2016/0130,942 | DEVICE FOR SINKING A SHAFT AND METHOD FOR SINKING A SHAFT | Jun 02, 14 | May 12, 16 | Herrenknecht AG |
| 2015/0174,789 | METHOD FOR WIRE SAW EXCAVATION | Feb 27, 15 | Jun 25, 15 | KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS |
| 2014/0374,161 | DEVICE FOR ENLARGING CAISSON BASES | Jan 21, 13 | Dec 25, 14 | Not available |
| 2013/0277,117 | METHOD FOR INTRODUCING A VERTICAL SHAFT AND SHAFT DRIVING MACHINE | Jun 14, 13 | Oct 24, 13 | Herrenknecht AG |
| 2012/0318,581 | FORMING A SHAFT FOR AN UNDERGROUND MINE | Jun 15, 12 | Dec 20, 12 | TECHNOLOGICAL RESOURCES PTY. LIMITED |
| 2012/0132,469 | Reamer | Nov 29, 10 | May 31, 12 | ARRIVAL OIL TOOLS, INC. |
| 2011/0247,878 | EXPANSION AND SENSING TOOL | Jun 16, 11 | Oct 13, 11 | SMART REAMER DRILLING SYSTEMS LTD |
| 2011/0139,510 | Apparatus and Method for Reaming a Wellbore During the Installation of a Tubular String | Dec 16, 09 | Jun 16, 11 | HALLIBURTON ENERGY SERVICES, INC. |
| 2009/0097,930 | REAMING APPARATUS | Dec 16, 08 | Apr 16, 09 | WEATHERFORD U.K. LIMITED |
| 2008/0217,061 | Pilot tube system and attachment mechanism for auger boring machine | Mar 07, 07 | Sep 11, 08 | Not available |
| 2008/0023,226 | Bore hole reaming apparatus and method | Jul 17, 07 | Jan 31, 08 | Not available |
| 2007/0158,111 | METHOD AND APPARATUS FOR DIRECTIONAL DRILLING | Dec 11, 03 | Jul 12, 07 | ALLRICH INVESTMENTS INC. |
| 2007/0084,637 | Methods and Apparatus for Expanding Tubular Members | Apr 18, 06 | Apr 19, 07 | SCHLUMBERGER TECHNOLOGY CORPORATION |
| 2007/0056,772 | Autoreaming systems and methods | Aug 31, 06 | Mar 15, 07 | Varco I/P, Inc. |
| 2006/0108,149 | Method and apparatus for forming bored hole | May 20, 03 | May 25, 06 | DIMITROFF, TED R. |
| 2006/0060,383 | Method and device for drilling a channel | Dec 05, 03 | Mar 23, 06 | TRACTO-TECHNIK GMBH & CO. KG |
| 2006/0006,001 | Percussive reamer and method of use thereof | Jul 09, 04 | Jan 12, 06 | Not available |
| 2005/0111,919 | Method and apparatus for underground pipeline installation | Nov 24, 04 | May 26, 05 | EARTH TOOL COMPANY, LLC |
| 2005/0042,036 | Device and method for trenchless replacement of underground pipe | Sep 17, 04 | Feb 24, 05 | Not available |