Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668946 | Backreamer | James Richard Rankin, Richard K. Smith, Jr., Peter C. Rozendaal, Scott Rempe | 2003-12-30 |
| 6659202 | Steerable fluid hammer | Mark Van Houwelingen | 2003-12-09 |
| 6588516 | Method and apparatus for directional boring under mixed conditions | Mark Van Houwelingen, James Richard Rankin, Rene Albert | 2003-07-08 |
| 6533052 | Drill bit for impact-assisted directional boring | Steven W. Wentworth, Robert F. Crane, Mark D. Randa, Richard K. Smith | 2003-03-18 |
| 6516899 | Method and apparatus for directional boring under mixed conditions | Steven W. Wentworth, Robert F. Crane, Mark Van Houwelingen | 2003-02-11 |