Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8087473 | Mobile self-erecting directional drilling rig apparatus | John M. Heieie | 2012-01-03 |
| 7958950 | Reamer and methods for directional drilling | Steven L. Ugrich | 2011-06-14 |
| 7748471 | Mobile self-erecting directional drilling rig apparatus | John M. Heieie | 2010-07-06 |
| 7730969 | Reamer and methods for directional drilling | Steven L. Ugrich | 2010-06-08 |
| 6227311 | Drill pipe guiding apparatus for a horizontal boring machine method | — | 2001-05-08 |
| 6082471 | Horizontal boring apparatus used to install a pipeline | — | 2000-07-04 |
| 5979574 | Horizontal boring apparatus and method of using the same | — | 1999-11-09 |
| 5979573 | Horizontal boring apparatus | — | 1999-11-09 |
| 5741087 | Chain separator for padding machine | — | 1998-04-21 |
| 5540003 | Padding machine with shaker for separator | — | 1996-07-30 |
| 5430962 | Pipeline padding apparatus with rotary feeder | — | 1995-07-11 |
| 5363574 | Pipeline padding apparatus | — | 1994-11-15 |
| 5314267 | Horizontal pipeline boring apparatus and method | — | 1994-05-24 |
| 5195260 | Pipeline padding apparatus | — | 1993-03-23 |
| 5120433 | Pipeline padding apparatus | — | 1992-06-09 |