Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE44427 | Apparatus for directional boring under mixed conditions | Randy R. Runquist, Mark Van Houwelingen, James Richard Rankin | 2013-08-13 |
| 6454025 | Apparatus for directional boring under mixed conditions | Randy R. Runquist, Mark Van Houwelingen, James Richard Rankin | 2002-09-24 |