Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10844574 | Mobile vacuum system | David A. Bural, Levi J. Krutzfeldt, Vernon T. Stellman | 2020-11-24 |
| D895914 | Vacuum system | B. Zac Blumer, Benjamin S. Burkhart, Levi J. Krutzfeldt, Jim L. Lee | 2020-09-08 |
| D640290 | Micro-trenching blade | Vernon T. Stellman, Michael C. Walgren | 2011-06-21 |
| D640291 | Conical cutting element | Vernon T. Stellman, Michael C. Walgren | 2011-06-21 |
| D640292 | Micro-trenching blade | Vernon T. Stellman, Michael C. Walgren | 2011-06-21 |