| 9506344 |
Tunneling apparatus |
Edwin Spoelstra, Nathan Meyer |
2016-11-29 |
| 8839885 |
Latching configuration for a microtunneling apparatus |
Robert Hoch Shuman, V, Douglas Eugene See, JR., Jeffrey James Utter, Matthew Arlen Mills |
2014-09-23 |
| 8684470 |
Drill head for a tunneling apparatus |
Andis Salins, Matthew Arlen Mills, Matthew Stephen Vos, Tod Michael, Robert Hoch Shuman, V |
2014-04-01 |
| 8439450 |
Tunneling apparatus including vacuum and method of use |
Andis Salins, Matthew Arlen Mills, Melvin Nguyen |
2013-05-14 |
| 8439132 |
Microtunnelling system and apparatus |
Andis Salins |
2013-05-14 |
| 8424618 |
Auger boring machine |
— |
2013-04-23 |
| 8256536 |
Backreamer for a tunneling apparatus |
Keith A. Hoelting, Matthew Stephen Vos |
2012-09-04 |
| 8151906 |
Microtunnelling system and apparatus |
Andis Salins |
2012-04-10 |
| 7976242 |
Drill head for a microtunnelling apparatus |
Andis Salins |
2011-07-12 |
| 7942217 |
Cutting apparatus for a microtunnelling system |
Andis Salins |
2011-05-17 |
| 7845432 |
Microtunnelling system and apparatus |
Andis Salins |
2010-12-07 |