Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9598905 | Two pipe horizontal directional drilling system | Michael D. Van Zee, Ryan D. Otis, Clint Recker, David M. Wisniewski | 2017-03-21 |
| 8235142 | Underground boring machine and method for controlling underground boring | Randy R. Runquist | 2012-08-07 |
| 8136612 | Constant-mode auto-drill with pressure derivative control | Philip R. Lane | 2012-03-20 |
| 7721821 | Underground boring machine and method for controlling underground boring | Randy R. Runquist | 2010-05-25 |
| 7694753 | Dual rod drill pipe with improved flow path method and apparatus | Randy R. Runquist, Tod Michael, Shawn Moyer | 2010-04-13 |
| 6880430 | Vise apparatus | — | 2005-04-19 |
| 6752043 | Vise apparatus | — | 2004-06-22 |
| 6517733 | Continuous flow liquids/solids slurry cleaning, recycling and mixing system | — | 2003-02-11 |
| 5794852 | Boom suspension assembly | Kevin Wald, Richard A. Moen | 1998-08-18 |