Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11867056 | Underground drill | Mark Paul Manteufel, Lee Evan von Lehe | 2024-01-09 |
| 10995601 | Horizontal directional drill with assisted mode and related methods | Richard Guertin, Lee Evan von Lehe, Adam John Lorang | 2021-05-04 |